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REPORTABLE BUSINESS SEGMENTS AND ALL OTHER - Operations by Segment (Details) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) segment | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($)
Segment Reporting [Abstract] |  |  |  |  |  |
Number of operating segments | segment |  |  |  | 5 |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income | [1] | $ 14,940 | $ 13,362 | $ 44,127 | $ 40,362 |
Non-interest revenue |  | 7,150 | 6,847 | 21,227 | 20,895 |
Total revenues, net of interest expense | [1] | 22,090 | 20,209 | 65,354 | 61,257 |
Total operating expenses | [1] | 14,290 | 13,144 | 41,292 | 40,497 |
Provisions for credit losses and for benefits and claims |  | 2,450 | 2,675 | 8,045 | 7,516 |
Provision (benefits) for income taxes |  | 1,559 | 1,116 | 4,085 | 3,299 |
Income (loss) from continuing operations |  | 3,791 | 3,274 | 11,932 | 9,945 |
Identifiable assets |  | 2,642,475 |  | 2,642,475 |  | $ 2,352,945
Average loans |  | 725,000 | 687,000 | 709,000 | 682,000 |
Average deposits |  | 1,382,000 | 1,311,000 | 1,343,000 | 1,316,000 |
Operating Segments |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Income (loss) from continuing operations |  | 4,568 | 3,319 | 12,904 | 10,116 |
Operating Segments | Services |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income |  | 3,823 | 3,435 | 10,951 | 9,977 |
Non-interest revenue |  | 1,540 | 1,580 | 4,363 | 4,476 |
Total revenues, net of interest expense |  | 5,363 | 5,015 | 15,314 | 14,453 |
Compensation expense |  | 647 | 584 | 1,920 | 1,780 |
Non-compensation expense |  | 2,060 | 1,991 | 6,050 | 6,187 |
Total operating expenses |  | 2,707 | 2,575 | 7,970 | 7,967 |
Provisions for credit losses and for benefits and claims |  | 61 | 127 | 465 | 164 |
Provision (benefits) for income taxes |  | 776 | 630 | 2,002 | 1,626 |
Income (loss) from continuing operations |  | 1,819 | 1,683 | 4,877 | 4,696 |
Identifiable assets |  | 627,000 |  | 627,000 |  | 584,000
Average loans |  | 94,000 | 87,000 | 92,000 | 84,000 |
Average deposits |  | 893,000 | 825,000 | 859,000 | 812,000 |
Operating Segments | Markets |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income |  | 2,251 | 1,405 | 7,166 | 5,149 |
Non-interest revenue |  | 3,312 | 3,412 | 10,262 | 10,111 |
Total revenues, net of interest expense |  | 5,563 | 4,817 | 17,428 | 15,260 |
Compensation expense |  | 972 | 854 | 2,982 | 2,728 |
Non-compensation expense |  | 2,519 | 2,485 | 7,486 | 7,300 |
Total operating expenses |  | 3,491 | 3,339 | 10,468 | 10,028 |
Provisions for credit losses and for benefits and claims |  | 32 | 141 | 341 | 329 |
Provision (benefits) for income taxes |  | 457 | 248 | 1,492 | 924 |
Income (loss) from continuing operations |  | 1,583 | 1,089 | 5,127 | 3,979 |
Identifiable assets |  | 1,182,000 |  | 1,182,000 |  | 949,000
Average loans |  | 147,000 | 119,000 | 137,000 | 119,000 |
Average deposits |  | 20,000 | 19,000 | 18,000 | 23,000 |
Operating Segments | Banking |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income |  | 562 | 527 | 1,583 | 1,636 |
Non-interest revenue |  | 1,570 | 1,070 | 4,422 | 3,324 |
Total revenues, net of interest expense |  | 2,132 | 1,597 | 6,005 | 4,960 |
Compensation expense |  | 691 | 676 | 2,018 | 2,095 |
Non-compensation expense |  | 448 | 440 | 1,292 | 1,331 |
Total operating expenses |  | 1,139 | 1,116 | 3,310 | 3,426 |
Provisions for credit losses and for benefits and claims |  | 157 | 177 | 544 | 16 |
Provision (benefits) for income taxes |  | 201 | 68 | 513 | 346 |
Income (loss) from continuing operations |  | 635 | 236 | 1,638 | 1,172 |
Identifiable assets |  | 141,000 |  | 141,000 |  | 143,000
Average loans |  | 81,000 | 88,000 | 82,000 | 89,000 |
Average deposits |  | 1,000 | 1,000 | 0 | 1,000 |
Operating Segments | Wealth |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income |  | 1,332 | 1,233 | 3,884 | 3,261 |
Non-interest revenue |  | 832 | 762 | 2,542 | 2,228 |
Total revenues, net of interest expense |  | 2,164 | 1,995 | 6,426 | 5,489 |
Compensation expense |  | 633 | 634 | 1,921 | 1,907 |
Non-compensation expense |  | 1,021 | 960 | 2,930 | 2,858 |
Total operating expenses |  | 1,654 | 1,594 | 4,851 | 4,765 |
Provisions for credit losses and for benefits and claims |  | 30 | 33 | 102 | (146) |
Provision (benefits) for income taxes |  | 106 | 85 | 321 | 202 |
Income (loss) from continuing operations |  | 374 | 283 | 1,152 | 668 |
Identifiable assets |  | 232,000 |  | 232,000 |  | 224,000
Average loans |  | 151,000 | 150,000 | 149,000 | 150,000 |
Average deposits |  | 315,000 | 316,000 | 311,000 | 316,000 |
Operating Segments | USPB |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income |  | 5,694 | 5,293 | 16,706 | 15,622 |
Non-interest revenue |  | (363) | (329) | (1,028) | (717) |
Total revenues, net of interest expense |  | 5,331 | 4,964 | 15,678 | 14,905 |
Compensation expense |  | 531 | 544 | 1,622 | 1,661 |
Non-compensation expense |  | 1,834 | 1,832 | 5,566 | 5,520 |
Total operating expenses |  | 2,365 | 2,376 | 7,188 | 7,181 |
Provisions for credit losses and for benefits and claims |  | 1,842 | 1,909 | 5,538 | 6,428 |
Provision (benefits) for income taxes |  | 266 | 157 | 700 | 306 |
Income (loss) from continuing operations |  | 858 | 522 | 2,252 | 990 |
Identifiable assets |  | 252,000 |  | 252,000 |  | 252,000
Average loans |  | 220,000 | 210,000 | 218,000 | 207,000 |
Average deposits |  | 90,000 | 85,000 | 90,000 | 93,000 |
All Other |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income |  | 1,278 | 1,469 | 3,837 | 4,717 |
Non-interest revenue |  | 257 | 351 | 841 | 1,451 |
Total revenues, net of interest expense |  | 1,535 | 1,820 | 4,678 | 6,168 |
Total operating expenses |  | 2,168 | 2,077 | 6,668 | 6,868 |
Provisions for credit losses and for benefits and claims |  | 331 | 289 | 1,064 | 718 |
Provision (benefits) for income taxes |  | (263) | (52) | (912) | (29) |
Income (loss) from continuing operations |  | (701) | (494) | (2,142) | (1,389) |
Identifiable assets |  | 208,000 |  | 208,000 |  | $ 201,000
Average loans |  | 32,000 | 33,000 | 31,000 | 33,000 |
Average deposits |  | 63,000 | 65,000 | 65,000 | 71,000 |
Reconciling Items |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net interest income |  | 0 | 0 | 0 | 0 |
Non-interest revenue |  | 2 | 1 | (175) | 22 |
Total revenues, net of interest expense |  | 2 | 1 | (175) | 22 |
Total operating expenses |  | 766 | 67 | 837 | 262 |
Provisions for credit losses and for benefits and claims |  | (3) | (1) | (9) | 7 |
Provision (benefits) for income taxes |  | 16 | (20) | (31) | (76) |
Income (loss) from continuing operations |  | $ (777) | $ (45) | $ (972) | $ (171) |
[1] | Effective January 1, 2025, certain transaction processing fees paid by Citi, primarily to credit card networks, which were previously presented within Other operating expenses, are presented as contra-revenue within Commissions and fees reported in Non-interest revenue. Prior periods were conformed to reflect this change in presentation.

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