CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions | Sep. 30, 2022 | Dec. 31, 2021 |
|---|---|---|
| Assets | ||
| Cash and due from banks (including segregated cash and other deposits) | $ 26,502 | $ 27,515 |
| Deposits with banks, net of allowance | 273,105 | 234,518 |
| Securities borrowed and purchased under agreements to resell (including $229,019 and $216,466 as of September 30, 2022 and December 31, 2021, respectively, at fair value), net of allowance | 349,214 | 327,288 |
| Brokerage receivables, net of allowance | 79,696 | 54,340 |
| Trading account assets (including $132,928 and $133,828 pledged to creditors as of September 30, 2022 and December 31, 2021, respectively) | 358,260 | 331,945 |
| Investments: | ||
| Available-for-sale debt securities (including $7,504 and $9,226 pledged to creditors as of September 30, 2022 and December 31, 2021, respectively), net of allowance | 232,143 | 288,522 |
| Held-to-maturity debt securities (fair value of which is $239,807 and $216,038 as of September 30, 2022 and December 31, 2021, respectively) (includes $— and $1,460 pledged to creditors as of September 30, 2022 and December 31, 2021, respectively), net of allowance | 267,864 | 216,963 |
| Equity securities (including $850 and $1,032 at fair value as of September 30, 2022 and December 31, 2021, respectively) | 8,009 | 7,337 |
| Total investments | 508,016 | 512,822 |
| Loans: | ||
| Loans, net of unearned income | 645,960 | 667,767 |
| Allowance for credit losses on loans (ACLL) | (16,309) | (16,455) |
| Total loans, net | 629,651 | 651,312 |
| Goodwill | 19,326 | 21,299 |
| Intangible assets (including MSRs of $647 and $404 as of September 30, 2022 and December 31, 2021, respectively, at fair value) | 4,485 | 4,495 |
| Other assets (including $9,947 and $12,342 as of September 30, 2022 and December 31, 2021, respectively, at fair value), net of allowance | 132,809 | 125,879 |
| Total assets | 2,381,064 | 2,291,413 |
| Liabilities | ||
| Non-interest-bearing deposits in U.S. offices | 135,514 | 158,552 |
| Interest-bearing deposits in U.S. offices (including $911 and $879 as of September 30, 2022 and December 31, 2021, respectively, at fair value) | 570,920 | 543,283 |
| Non-interest-bearing deposits in offices outside the U.S. | 98,904 | 97,270 |
| Interest-bearing deposits in offices outside the U.S. (including $1,529 and $787 as of September 30, 2022 and December 31, 2021, respectively, at fair value) | 501,148 | 518,125 |
| Total deposits | 1,306,486 | 1,317,230 |
| Securities loaned and sold under agreements to repurchase (including $73,107 and $56,694 as of September 30, 2022 and December 31, 2021, respectively, at fair value) | 203,429 | 191,285 |
| Brokerage payables (including $3,213 and $3,575 as of September 30, 2022 and December 31, 2021, respectively, at fair value) | 87,841 | 61,430 |
| Trading account liabilities | 196,479 | 161,529 |
| Short-term borrowings (including $6,569 and $7,358 as of September 30, 2022 and December 31, 2021, respectively, at fair value) | 47,368 | 27,973 |
| Long-term debt (including $91,825 and $82,609 as of September 30, 2022 and December 31, 2021, respectively, at fair value) | 253,068 | 254,374 |
| Other liabilities | 87,276 | 74,920 |
| Total liabilities | 2,181,947 | 2,088,741 |
| Stockholders’ equity | ||
| Preferred stock ($1.00 par value; authorized shares: 30 million), issued shares: as of September 30, 2022—759,800 and as of December 31, 2021—759,800, at aggregate liquidation value | 18,995 | 18,995 |
| Common stock ($0.01 par value; authorized shares: 6 billion), issued shares: as of September 30, 2022—3,099,669,424 and as of December 31, 2021—3,099,651,835 | 31 | 31 |
| Additional paid-in capital | 108,347 | 108,003 |
| Retained earnings | 193,462 | 184,948 |
| Treasury stock, at cost | (73,977) | (71,240) |
| Accumulated other comprehensive income (loss) (AOCI) | (48,298) | (38,765) |
| Total Citigroup stockholders’ equity | 198,560 | 201,972 |
| Noncontrolling interests | 557 | 700 |
| Total equity | 199,117 | 202,672 |
| Total liabilities and equity | 2,381,064 | 2,291,413 |
| Consolidated VIEs | ||
| Assets | ||
| Cash and due from banks (including segregated cash and other deposits) | 63 | 260 |
| Trading account assets (including $132,928 and $133,828 pledged to creditors as of September 30, 2022 and December 31, 2021, respectively) | 8,274 | 10,038 |
| Investments: | ||
| Total investments | 616 | 844 |
| Loans: | ||
| Loans, net of unearned income | 50,148 | 48,989 |
| Allowance for credit losses on loans (ACLL) | (2,446) | (2,668) |
| Total loans, net | 47,702 | 46,321 |
| Other assets (including $9,947 and $12,342 as of September 30, 2022 and December 31, 2021, respectively, at fair value), net of allowance | 71 | 1,174 |
| Total assets | 56,726 | 58,637 |
| Liabilities | ||
| Short-term borrowings (including $6,569 and $7,358 as of September 30, 2022 and December 31, 2021, respectively, at fair value) | 10,073 | 8,376 |
| Long-term debt (including $91,825 and $82,609 as of September 30, 2022 and December 31, 2021, respectively, at fair value) | 10,438 | 12,579 |
| Other liabilities | 266 | 694 |
| Total liabilities | 20,777 | 21,649 |
| Consumer | ||
| Loans: | ||
| Loans, net of unearned income | 357,583 | 376,534 |
| Allowance for credit losses on loans (ACLL) | (13,361) | (14,040) |
| Consumer | Consolidated VIEs | ||
| Loans: | ||
| Loans, net of unearned income | 34,333 | 34,677 |
| Corporate | ||
| Loans: | ||
| Loans, net of unearned income | 288,377 | 291,233 |
| Allowance for credit losses on loans (ACLL) | (2,948) | (2,415) |
| Corporate | Consolidated VIEs | ||
| Loans: | ||
| Loans, net of unearned income | $ 15,815 | $ 14,312 |