v3.25.4
CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (AOCI) - Reclassification out of AOCI (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Realized (gains) losses on sales of investments $ (471,000) $ (328,000) $ (188,000)
Provision (benefits) for income taxes 5,373,000 4,211,000 3,528,000
Net realized (gains) losses on investments, after-tax (14,455,000) (12,835,000) (9,382,000)
Realized gains (losses) on investment securities      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Total amounts reclassified out of AOCI, after-tax (211,000) (6,000) (12,000)
Realized gains (losses) on investment securities | (Gain) loss reclassified from AOCI      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Realized (gains) losses on sales of investments (471,000) (328,000) (188,000)
Gross impairment losses 184,000 323,000 188,000
Income from continuing operations before income taxes (287,000) (5,000) 0
Provision (benefits) for income taxes 76,000 (1,000) (12,000)
Net realized (gains) losses on investments, after-tax (211,000) (6,000) (12,000)
Debt valuation adjustment (DVA)      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Total amounts reclassified out of AOCI, after-tax 36,000 17,000 2,000
Debt valuation adjustment (DVA) | (Gain) loss reclassified from AOCI      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Realized (gains) losses on sales of investments 58,000 23,000 3,000
Provision (benefits) for income taxes (22,000) (6,000) (1,000)
Net realized (gains) losses on investments, after-tax 36,000 17,000 2,000
Cash flow hedges      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Total amounts reclassified out of AOCI, after-tax 432,000 781,000 1,443,000
Cash flow hedges | (Gain) loss reclassified from AOCI      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Income from continuing operations before income taxes 569,000 1,030,000 1,901,000
Provision (benefits) for income taxes (137,000) (249,000) (458,000)
Cash flow hedges | (Gain) loss reclassified from AOCI | Interest rate contracts      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Income from continuing operations before income taxes 556,000 1,027,000 1,897,000
Cash flow hedges | (Gain) loss reclassified from AOCI | Foreign exchange contracts      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Income from continuing operations before income taxes 13,000 3,000 4,000
Benefit plans      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Total amounts reclassified out of AOCI, pretax 252,000 241,000 167,000
Total tax effect (67,000) (60,000) (46,000)
Total amounts reclassified out of AOCI, after-tax 185,000 181,000 121,000
Prior service cost (benefit)      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Total amounts reclassified out of AOCI, pretax (16,000) (17,000) (22,000)
Net actuarial loss      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Total amounts reclassified out of AOCI, pretax 262,000 256,000 196,000
Curtailment/settlement impact      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Curtailment/settlement gain (loss) 6,000 2,000 (7,000)
Excluded component of fair value hedges      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Total amounts reclassified out of AOCI, after-tax 2,000 (14,000) (32,000)
Excluded component of fair value hedges | (Gain) loss reclassified from AOCI      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Income from continuing operations before income taxes 2,000 (18,000) (43,000)
Provision (benefits) for income taxes 0 4,000 11,000
Total amounts reclassified out of AOCI, after-tax 2,000 (14,000) (32,000)
CTA      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Total amounts reclassified out of AOCI, after-tax 13,000 0 0
CTA | (Gain) loss reclassified from AOCI      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Income from continuing operations before income taxes 14,000 0 0
Provision (benefits) for income taxes (1,000) 0 0
Citigroup's accumulated other comprehensive income (loss)      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Total amounts reclassified out of AOCI, pretax 608,000 1,270,000 2,028,000
Total tax effect (151,000) (312,000) (506,000)
Total amounts reclassified out of AOCI, after-tax 457,000 958,000 1,522,000
Long-duration insurance contracts      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Total amounts reclassified out of AOCI, after-tax 0 (1,000) 0
Long-duration insurance contracts | (Gain) loss reclassified from AOCI      
Pretax and after-tax amounts reclassified out of accumulated other comprehensive income (loss)      
Income from continuing operations before income taxes 0 (1,000) 0
Provision (benefits) for income taxes 0 0 0
Total amounts reclassified out of AOCI, after-tax $ 0 $ (1,000) $ 0