| 
                                            
                                            
                                                Korea KDB: OL: Accounts Payable (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4,580.63
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea Development Bank (KDB): Total Assets (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 214,124.25
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Cash and Due from Banks (CD) (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 6,803.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: CD: Discount Present Value (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: CD: Cash & Checks (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 49.51
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: CD: Foreign Currency (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 13.35
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: CD: Due from Banks in Won (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,637.42
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: CD: Due from Banks in Foreign Currency (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,103.22
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Securities (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 56,297.80
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Securities: Trading (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2004 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Securities: Available for Sale (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 32,033.85
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2004 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Securities: Held to Maturity (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 12.31
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2004 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Securities: Investment Stocks Applied to Equity Method (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2004 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 136,270.69
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Allowance for Credit Losses (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,329.22
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Discount Present Value (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 215.81
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Loans & Discounts in Won (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 100,795.83
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Loans in Foreign Currency (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 25,648.93
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Bills Bought in Won (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3.81
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Bills Bought (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,253.14
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Advances for Customers (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 112.11
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Factoring Receivables (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Credit Card Accounts (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Bonds Purchased Under Resale Agreements (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,448.73
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Domestic Import Usance Bills (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,484.34
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Call Loans (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4,126.17
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Loans for Debt-Equity Swap (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Private Placement Corporate Bonds (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,937.31
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Loans: Other Loans (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Fixed Assets (FA) (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 671.27
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: FA: Tangible Assets (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,053.46
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: FA: Accumulated Depreciation (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 373.83
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: FA: Non-Business Assets (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: FA: Allowance for Evaluation of Assets not Used for Business (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Other Assets (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 14,080.98
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Other Assets: Guarantee Deposits (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 152.92
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Other Assets: Accounts Receivable (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4,837.47
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Other Assets: Revenues Receivable (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 453.61
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Other Assets: Prepaid Expenses (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3.25
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Other Assets: Deferred Income Tax Debits (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Other Assets: Loans to Trust Accounts (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Other Assets: Others (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 8,543.23
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Total Liabilities (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 190,761.14
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Deposits (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 33,058.18
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Deposits: Deposits in Won (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 24,829.55
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Deposits: Deposits in Foreign Currency (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4,330.02
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Deposits: Negotiable Certificates of Deposit (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,898.61
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: BB: Borrowings in Won (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 4,789.61
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: BB: Borrowings in Foreign Currency (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 11,875.73
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: BB: Bonds Sold Under Repurchase Agreements (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 3,516.98
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: BB: Bills Sold (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.54
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: BB: Call Money (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 790.08
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: BB: Credit Card Receivables (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: BB: Other Borrowings (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: BB: Bonds Payable in Won (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 96,451.73
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: BB: Bonds Payable in Foreign Currency (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 23,031.69
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: BB: Discount or Premium on Won or For Curr Issuance (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 80.72
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Other Liabilities (OL) (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 17,328.64
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Allowances for Severance and Retirement Benefits (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Transfer from National Pension (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Due from Insurer Severance Benefits (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2000 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Allowances for Acceptances and Guarantees Losses (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 637.87
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Borrowings from Trust Accounts (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,062.61
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Foreign Exchanges Payable (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 77.29
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Accrued Expenses Payable (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,729.34
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Unearned Revenues (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 37.92
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Factoring Payables (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Deposits for Letter of Guarantees and Others (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 393.87
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Deferred Income Tax Credits (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,312.79
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: OL: Others (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 7,063.91
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Total Stockholder's Equity (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 23,363.10
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Capital Stock (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 17,938.10
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Capital Surplus (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,498.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Capital Surplus: Paid in Capital in Excess of Par-Value (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 63.13
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Capital Surplus: Gain on Capital Reduction (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 44.37
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Capital Surplus: Others (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,390.49
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Retained Earnings (RE) (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 2,487.22
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: RE: Legal Reserve (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: RE: Reserve for Business Rationalization (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: RE: Voluntary Reserves (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: RE: Other Reserves (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,308.50
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Capital Adjustment (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 439.79
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Capital Adjustment: Discounts on Stock Issuance (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Capital Adjustment: Treasury Stock (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 0.00
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Capital Adjustment: Gains on Valuation of Available for sale (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 497.87
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Mar 2004 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Capital Adjustment: Others (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 -58.09
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Jun 1999 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: Borrowings and Bonds Payable (BB) (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 140,374.32
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 2004 - Dec 2017
                                     | 
                                
                            
                        
                            
                                
                                    
                                        
                                        
                                        | 
                                            
                                            
                                                Korea KDB: RE: Unappropriated RE Carried over to Subsequent Year (KRW bn)
                                            
                                         | 
                                    
                                    
                                        
                                        
                
                 1,178.72
            
                                        Dec 2017
                                     | 
                                    
                                    
                                    
                                        quarterly
                                     | 
                                    
                                        Dec 2004 - Dec 2017
                                     |