v3.25.1
INVESTMENT SECURITIES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investment securities, fair value $ 1,000   $ 982
Accrued interest, current $ 507   $ 473
Accrued interest, current, statement of financial position All other current assets (Note 9)   All other current assets (Note 9)
Debt securities in unrealized loss position, total $ 20,859   $ 21,876
Debt securities in unrealized loss position, 12 months or more 13,913   14,011
Gross unrealized losses, 12 months or more (2,663)   (2,795)
Gross unrealized losses (2,958)   (3,148)
Investments without readily determinable fair value 1,491   1,439
Fair value adjustments, including impairment 38 $ 34  
Level 3      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments with a fair value 4,351   5,074
AerCap      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investment securities, fair value 1,000   982
CMBS      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Gross unrealized losses (96)    
Asset-backed securities      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Gross unrealized losses (57)    
Insurance      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments without readily determinable fair value 1,462   $ 1,410
Investment securities | Level 3      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Transfers out of level 3 $ 949