CONSOLIDATED BALANCE SHEET - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 |
|---|---|---|
| Assets | ||
| Cash and due from banks (including segregated cash and other deposits) | $ 30,577 | $ 27,515 |
| Deposits with banks, net of allowance | 311,448 | 234,518 |
| Securities borrowed and purchased under agreements to resell (including $239,527 and $216,466 as of December 31, 2022 and 2021, respectively, at fair value), net of allowance | 365,401 | 327,288 |
| Brokerage receivables, net of allowance | 54,192 | 54,340 |
| Trading account assets (including $133,535 and $133,828 pledged to creditors at December 31, 2022 and 2021, respectively) | 334,114 | 331,945 |
| Investments: | ||
| Available-for-sale debt securities (including $10,933 and $9,226 pledged to creditors as of December 31, 2022 and 2021, respectively), net of allowance | 249,679 | 288,522 |
| Held-to-maturity debt securities (fair value of which is $243,648 and $216,038 as of December 31, 2022 and 2021, respectively) (includes $— and $1,460 pledged to creditors as of December 31, 2022 and 2021, respectively), net of allowance | 268,863 | 216,963 |
| Equity securities (including $895 and $1,032 as of December 31, 2022 and 2021, respectively, at fair value) | 8,040 | 7,337 |
| Total investments | 526,582 | 512,822 |
| Loans: | ||
| Loans, net of unearned income | 657,221 | 667,767 |
| Allowance for credit losses on loans (ACLL) | (16,974) | (16,455) |
| Total loans, net | 640,247 | 651,312 |
| Goodwill | 19,691 | 21,299 |
| Intangible assets (including MSRs of $665 and $404 as of December 31, 2022 and 2021, respectively, at fair value) | 4,428 | 4,495 |
| Premises and equipment, net of depreciation and amortization | 26,253 | 24,328 |
| Other assets (including $10,658 and $12,342 as of December 31, 2022 and 2021, respectively, at fair value), net of allowance | 103,743 | 101,551 |
| Total assets | 2,416,676 | 2,291,413 |
| Liabilities | ||
| Deposits (including $1,875 and $1,666 as of December 31, 2022 and 2021, respectively, at fair value) | 1,365,954 | 1,317,230 |
| Securities loaned and sold under agreements to repurchase (including $70,886 and $56,694 as of December 31, 2022 and 2021, respectively, at fair value) | 202,444 | 191,285 |
| Brokerage payables (including $4,439 and $3,575 as of December 31, 2022 and 2021, respectively, at fair value) | 69,218 | 61,430 |
| Trading account liabilities | 170,647 | 161,529 |
| Short-term borrowings (including $6,222 and $7,358 as of December 31, 2022 and 2021, respectively, at fair value) | 47,096 | 27,973 |
| Long-term debt (including $105,995 and $82,609 as of December 31, 2022 and 2021, respectively, at fair value) | 271,606 | 254,374 |
| Other liabilities | 87,873 | 74,920 |
| Total liabilities | 2,214,838 | 2,088,741 |
| Stockholders’ equity | ||
| Preferred stock ($1.00 par value; authorized shares: 30 million), issued shares: 759,800 as of December 31, 2022 and 759,800 as of December 31, 2021, at aggregate liquidation value | 18,995 | 18,995 |
| Common stock ($0.01 par value; authorized shares: 6 billion), issued shares: 3,099,669,424 as of December 31, 2022 and 3,099,651,835 as of December 31, 2021 | 31 | 31 |
| Additional paid-in capital | 108,458 | 108,003 |
| Retained earnings | 194,734 | 184,948 |
| Treasury stock, at cost: 1,162,682,999 shares as of December 31, 2022 and 1,115,296,641 shares as of December 31, 2021 | (73,967) | (71,240) |
| Accumulated other comprehensive income (loss) (AOCI) | (47,062) | (38,765) |
| Total Citigroup stockholders’ equity | 201,189 | 201,972 |
| Noncontrolling interests | 649 | 700 |
| Total equity | 201,838 | 202,672 |
| Total liabilities and equity | 2,416,676 | 2,291,413 |
| Consumer | ||
| Loans: | ||
| Loans, net of unearned income | 368,067 | 376,534 |
| Allowance for credit losses on loans (ACLL) | (14,119) | (14,040) |
| Corporate | ||
| Loans: | ||
| Loans, net of unearned income | 289,154 | 291,233 |
| Allowance for credit losses on loans (ACLL) | $ (2,855) | $ (2,415) |