Annual report pursuant to Section 13 and 15(d)

Derivatives - Designated Fair Value Hedged Assets and Liabilities (Details)

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Derivatives - Designated Fair Value Hedged Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Derivative [Line Items]    
Hedged liability, long-term debt, carrying value $ 181,745 $ 150,556
Hedged liability, long-term debt, cumulative fair value adjustments 3,987 8,910
Amortized cost basis of portfolios used in hedging relationships 21,100 34,600
Hedged asset, fair value edge, last-of-layer, amount 6,900 7,000
Cumulative basis adjustments, hedging relationships (172)  
Total AFS debt securities    
Derivative [Line Items]    
Hedged asset, available-for-sale debt securities, carrying value 209,038 116,252
Hedged asset, available-for-sale debt securities, cumulative fair value adjustments (2,294) 114
Total trading account assets    
Derivative [Line Items]    
Hedged asset, available-for-sale debt securities, carrying value 2,067 427
Hedged asset, available-for-sale debt securities, cumulative fair value adjustments 32 15
Interest rate risk on long-term debt    
Derivative [Line Items]    
Increase (decrease) in liability 1,500 3,700
Interest rate risk on AFS securities    
Derivative [Line Items]    
Available-for-sale securities from discontinued hedging relationships cumulative increase (decrease) $ (1,000) $ (69)