Annual report pursuant to Section 13 and 15(d)

Securitizations and Other Variable Interest Entities - Other Asset-backed Securitizations, Narrative (Details)

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Securitizations and Other Variable Interest Entities - Other Asset-backed Securitizations, Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Variable Interest Entity [Line Items]      
Carrying value of receivables in trusts $ 1,053,732 $ 1,045,747  
Long-term debt 302,204 275,982  
Total assets 3,180,151 3,051,375
Customer Vehicles      
Variable Interest Entity [Line Items]      
Maximum loss exposure 952 914  
Collateralized Debt Obligations      
Variable Interest Entity [Line Items]      
Maximum loss exposure 80 197  
Investment Vehicles      
Variable Interest Entity [Line Items]      
Maximum loss exposure 2,600 3,000  
Tax Credit Vehicles      
Variable Interest Entity [Line Items]      
Investments in affordable housing project investments 15,800 14,700  
Unfunded commitments $ 7,200 6,900  
Unfunded commitment payment period 5 years    
Tax credits and other benefits $ 1,900 1,500 1,300
Pretax losses (1,500) (1,200) (1,100)
Renewable Energy Investments      
Variable Interest Entity [Line Items]      
Equity investments 14,200 13,900  
Unfunded capital contributions $ 6,200 1,900  
Term of unfunded capital contributions (in years) 2 years    
Tax credits and other tax benefits related to renewable energy investments $ 4,000 2,900  
Pretax losses in renewable energy investments (3,100) (2,100) (2,200)
Consolidated VIEs      
Variable Interest Entity [Line Items]      
Carrying value of receivables in trusts 18,276 16,738  
Long-term debt 8,456 4,581  
Total assets 23,773 18,873  
Consolidated VIEs | Investment Vehicles      
Variable Interest Entity [Line Items]      
Total assets 472 854  
Consolidated VIEs | Leveraged Lease Trusts      
Variable Interest Entity [Line Items]      
Total assets 1,100 1,200  
Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Liquidity commitments to unconsolidated securitization trusts 989 978  
Unconsolidated VIEs | Investment Vehicles      
Variable Interest Entity [Line Items]      
Total assets 18,400 14,800  
Unconsolidated VIEs | Tax Credit Vehicles      
Variable Interest Entity [Line Items]      
Total assets 84,100 74,800  
Credit Card and Automobile | Consolidated VIEs      
Variable Interest Entity [Line Items]      
Carrying value of receivables in trusts 16,640 14,555  
Long-term debt 7,825 4,247  
Maximum loss exposure 8,127 9,555  
Total assets 15,971 13,815  
Credit Card and Automobile | Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Carrying value of receivables in trusts 0 0  
Maximum loss exposure 0 0  
Total assets 0 0  
Resecuritization Trusts      
Variable Interest Entity [Line Items]      
Cash proceeds from new securitizations 8,600 21,800 28,900
Securities      
Variable Interest Entity [Line Items]      
Cash proceeds from new securitizations 2,400 2,400 $ 2,200
Municipal Bonds | Unconsolidated VIEs      
Variable Interest Entity [Line Items]      
Liquidity commitments to unconsolidated securitization trusts $ 1,700 $ 2,500  
Weighted average remaining life of bonds held in the trusts in years 12 years 2 months 12 days