DEBT - Maturities of Long-term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument
2025	$ 41,875
2026	50,869
2027	30,323
2028	29,256
2029	17,822
Thereafter	117,155
Total	287,300	$ 286,619
Bank
Debt Instrument
2025	9,999
2026	10,723
2027	5,318
2028	2,576
2029	3,391
Thereafter	3,463
Total	35,470
Broker-dealer
Debt Instrument
2025	21,313
2026	11,643
2027	11,777
2028	6,763
2029	8,868
Thereafter	27,442
Total	87,806
Citigroup Inc.
Debt Instrument
2025	10,563
2026	28,503
2027	13,228
2028	19,917
2029	5,563
Thereafter	86,250
Total	$ 164,024	$ 162,309

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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