| 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: SF: Con: Loans: Short Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: Securities Other Than Shares (SO): exc... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 5,395.200
            
                                        Sep 2024
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Sep 2024
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: Loans (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4,158.400
            
                                        Sep 2024
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Sep 2024
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: General Government (GG): Currency and Deposits (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,344.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Securities Other Than Shares (SO): excl Fin... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 526.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SO: excl Financial Derivatives: Short Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 270.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SO: excl Financial Derivatives: Long Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 256.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Consolidated (Con): Currency and Deposits (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,390.10
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Con: Securities Other Than Shares (SO): exc... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 526.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Con: SO: excl Financial Derivatives: Short ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 270.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Con: SO: excl Financial Derivatives: Long T... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 256.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Con: Loans (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 635.60
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Con: Loans: Short Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Con: Loans: Long Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 631.10
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Con: Shares and Other Equity (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 8,085.90
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Con: Shares and Other Equity: Quoted Shares (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 70.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Con: Insurance, Pension & Standardized Guar... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Con: Financial Derivatives (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Con: Other Accounts Receivable (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,292.20
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Central Government (CG): Consolidated (Con)... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,157.20
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: CG: Con: Securities Other Than Shares (SO):... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 526.30
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: CG: Con: SO: excl Financial Derivatives: Sh... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 270.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: CG: Con: SO: excl Financial Derivatives: Lo... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 256.30
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: CG: Con: Loans (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 700.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: CG: Con: Loans: Short Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4.60
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: CG: Con: Loans: Long Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 695.90
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: CG: Con: Shares and Other Equity (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 7,808.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: CG: Con: Shares and Other Equity: Quoted Sh... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: CG: Con: Insurance, Pension & Standardized ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: CG: Con: Financial Derivatives (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: CG: Con: Other Accounts Receivable (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,302.40
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Local Government (LG): Consolidated (Con): ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 232.90
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: LG: Con: Securities Other Than Shares (SO):... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: LG: Con: SO: excl Financial Derivatives: Sh... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: LG: Con: SO: excl Financial Derivatives: Lo... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: LG: Con: Loans (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3.20
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: LG: Con: Loans: Short Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.10
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: LG: Con: Loans: Long Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3.10
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: LG: Con: Shares and Other Equity (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 277.20
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: LG: Con: Shares and Other Equity: Quoted Sh... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 70.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: LG: Con: Insurance, Pension & Standardized ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: LG: Con: Financial Derivatives (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: LG: Con: Other Accounts Receivable (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 65.30
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: Social Security Funds (SF): Consolidated (C... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 898.10
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SF: Con: Securities Other Than Shares (SO):... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SF: Con: SO: excl Financial Derivatives: Sh... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SF: Con: SO: excl Financial Derivatives: Lo... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SF: Con: Loans (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SF: Con: Loans: Short Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SF: Con: Loans: Long Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SF: Con: Shares and Other Equity (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SF: Con: Shares and Other Equity: Quoted Sh... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SF: Con: Insurance, Pension & Standardized ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SF: Con: Financial Derivatives (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Assets: Stock: GG: SF: Con: Other Accounts Receivable (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 130.30
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: SO: excl Financial Derivatives: Short ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: SO: excl Financial Derivatives: Long T... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 264.30
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: Con: Securities Other Than Shares (SO)... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 264.30
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: Con: SO: excl Financial Derivatives: S... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: Con: SO: excl Financial Derivatives: L... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 264.30
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: Con: Loans (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,752.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: Con: Loans: Short Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 9.20
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: Con: Loans: Long Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,743.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: Con: Insurance, Pension & Standardized... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 13.90
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: Con: Financial Derivatives (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: Con: Other Accounts Payable (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 823.90
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: CG: Con: Securities Other Than Shares ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 98.60
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: CG: Con: SO: excl Financial Derivative... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: CG: Con: SO: excl Financial Derivative... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 98.60
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: CG: Con: Loans (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,228.10
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: CG: Con: Loans: Short Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: CG: Con: Loans: Long Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,226.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: CG: Con: Insurance, Pension & Standard... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 13.90
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: CG: Con: Financial Derivatives (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.70
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: CG: Con: Other Accounts Payable (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 718.40
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: LG: Con: Securities Other Than Shares ... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 165.70
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: LG: Con: SO: excl Financial Derivative... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: LG: Con: SO: excl Financial Derivative... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 165.70
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: LG: Con: Loans (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 592.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: LG: Con: Loans: Short Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 7.40
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: LG: Con: Loans: Long Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 585.40
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: LG: Con: Insurance, Pension & Standard... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: LG: Con: Financial Derivatives (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.30
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: LG: Con: Other Accounts Payable (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 193.20
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: SF: Con: Loans (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: SF: Con: Loans: Long Term (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: SF: Con: Insurance, Pension & Standard... (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: SF: Con: Financial Derivatives (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Estonia Financial Liabilities: Stock: GG: SF: Con: Other Accounts Payable (EUR mn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 118.10
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 1998 - Dec 2017
                                     |