| 0010 - Statement - CONSOLIDATED STATEMENT OF INCOME (CITIGROUP INC. AND SUBSIDIARIES) |
Statement [Table] |
Yes |
Yes |
| 0015 - Statement - CONSOLIDATED STATEMENT OF INCOME PARENTHETICAL (CITIGROUP INC. AND SUBSIDIARIES) |
Statement [Table] |
Yes |
Yes |
| 0020 - Statement - CONSOLIDATED BALANCE SHEET (CITIGROUP INC. AND SUBSIDIARIES) |
Statement [Table] |
Yes |
Yes |
| 0025 - Statement - CONSOLIDATED BALANCE SHEET PARENTHETICAL (CITIGROUP INC. AND SUBSIDIARIES) |
Statement [Table] |
Yes |
Yes |
| 0030 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (CITIGROUP INC. AND SUBSIDIARIES) |
Statement [Table] |
Yes |
Yes |
| 0035 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN EQUITY PARENTHETICAL (CITIGROUP INC. AND SUBSIDIARIES) |
Statement [Table] |
Yes |
Yes |
| 0040 - Statement - CONSOLIDATED STATEMENT OF CASH FLOWS (CITIGROUP INC. AND SUBSIDIARIES) |
Statement [Table] |
Yes |
Yes |
| 0050 - Statement - CONSOLIDATED BALANCE SHEET (CITIBANK, N.A. AND SUBSIDIARIES) |
Statement [Table] |
Yes |
Yes |
| 0055 - Statement - CONSOLIDATED BALANCE SHEET PARENTHETICAL (CITIBANK, N.A. AND SUBSIDIARIES) |
Statement [Table] |
Yes |
Yes |
| 1010 - Disclosure - BASIS OF PRESENTATION |
Statement [Table] |
Yes |
Yes |
| 1020 - Disclosure - DISCONTINUED OPERATIONS |
Statement [Table] |
Yes |
Yes |
| 1030 - Disclosure - BUSINESS SEGMENTS |
Statement [Table] |
Yes |
Yes |
| 1040 - Disclosure - INTEREST REVENUE AND EXPENSE |
Statement [Table] |
Yes |
Yes |
| 1050 - Disclosure - COMMISSIONS AND FEES |
Statement [Table] |
Yes |
Yes |
| 1060 - Disclosure - RETIREMENT BENEFITS |
Statement [Table] |
Yes |
Yes |
| 1070 - Disclosure - RESTRUCTURING |
Statement [Table] |
Yes |
Yes |
| 1080 - Disclosure - EARNINGS PER SHARE |
Statement [Table] |
Yes |
Yes |
| 1090 - Disclosure - TRADING ACCOUNT ASSETS AND LIABILITIES |
Statement [Table] |
Yes |
Yes |
| 1100 - Disclosure - INVESTMENTS |
Statement [Table] |
Yes |
Yes |
| 1110 - Disclosure - GOODWILL AND INTANGIBLE ASSETS |
Statement [Table] |
Yes |
Yes |
| 1120 - Disclosure - DEBT |
Statement [Table] |
Yes |
Yes |
| 1130 - Disclosure - PREFERRED STOCK |
Statement [Table] |
Yes |
Yes |
| 1140 - Disclosure - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |
Statement [Table] |
Yes |
Yes |
| 1150 - Disclosure - SECURITIZATIONS AND VARIABLE INTEREST ENTITIES |
Statement [Table] |
Yes |
Yes |
| 1160 - Disclosure - DERIVATIVES ACTIVITIES |
Statement [Table] |
Yes |
Yes |
| 1170 - Disclosure - FAIR-VALUE MEASUREMENT |
Statement [Table] |
Yes |
Yes |
| 1180 - Disclosure - FAIR-VALUE ELECTIONS |
Statement [Table] |
Yes |
Yes |
| 1190 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS |
Statement [Table] |
Yes |
Yes |
| 1200 - Disclosure - GUARANTEES |
Statement [Table] |
Yes |
Yes |
| 1210 - Disclosure - CONTINGENCIES |
Statement [Table] |
Yes |
Yes |
| 1220 - Disclosure - CITIBANK, N.A. EQUITY |
Statement [Table] |
Yes |
Yes |
| 1230 - Disclosure - SUBSEQUENT EVENTS |
Statement [Table] |
Yes |
Yes |
| 1240 - Disclosure - CONDENSED CONSOLIDATING FINANCIAL STATEMENT SCHEDULES |
Statement [Table] |
Yes |
Yes |
| 9999 - Document - Document and Entity Information |
Statement [Table] |
Yes |
Yes |