Quarterly report pursuant to Section 13 or 15(d)

Securities - Maturities of Debt Securities Carried at Fair Value and Held-to-maturity Debt Securities (Details)

v3.22.2.2
Securities - Maturities of Debt Securities Carried at Fair Value and Held-to-maturity Debt Securities (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]    
Due in one year or less, amount $ 37  
Due in one year or less, yield 0.00%  
Due after one year through five years, amount $ 5,603  
Due after one year through five years, yield 1.86%  
Due after five years through ten years, amount $ 117,493  
Due after five years though ten years, yield 1.37%  
Due after ten years, amount $ 520,610  
Due after ten years, yield 2.13%  
Amortized cost $ 643,743 $ 674,591
Total, yield 1.99%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Fair Value $ 236,245 308,073
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in one year or less, amount 37  
Due after one year through five years, amount 5,122  
Due after five years though ten years, amount 96,781  
Due after ten years, amount 425,613  
Held-to-maturity, fair value 527,553 665,890
Debt securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 27,605  
Due in one year or less, yield 1.71%  
Due after one year through five years, amount $ 71,667  
Due after one year through five years, yield 1.93%  
Due after five years through ten years, amount $ 107,357  
Due after five years through ten years, yield 1.68%  
Due after ten years, amount $ 35,080  
Due after ten years, yield 3.36%  
Amount $ 241,709  
Total, yield 2.01%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 27,320  
Due after one year through five years, amount 71,005  
Due after five years though ten years, amount 105,738  
Due after ten years, amount 32,182  
Fair Value 236,245  
Mortgage-backed securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 36  
Due in one year or less, yield 2.22%  
Due after one year through five years, amount $ 508  
Due after one year through five years, yield 2.81%  
Due after five years through ten years, amount $ 4,267  
Due after five years through ten years, yield 1.81%  
Due after ten years, amount $ 30,648  
Due after ten years, yield 3.40%  
Amount $ 35,459  
Total, yield 3.20%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 36  
Due after one year through five years, amount 495  
Due after five years though ten years, amount 4,017  
Due after ten years, amount 27,997  
Fair Value 32,545  
Agency    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 0  
Due in one year or less, yield 0.00%  
Due after one year through five years, amount $ 5  
Due after one year through five years, yield 5.20%  
Due after five years through ten years, amount $ 40  
Due after five years through ten years, yield 4.88%  
Due after ten years, amount $ 25,698  
Due after ten years, yield 3.36%  
Amount $ 25,743  
Total, yield 3.36%  
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]    
Due in one year or less, amount $ 0  
Due in one year or less, yield 0.00%  
Due after one year through five years, amount $ 0  
Due after one year through five years, yield 0.00%  
Due after five years through ten years, amount $ 14  
Due after five years though ten years, yield 2.71%  
Due after ten years, amount $ 513,963  
Due after ten years, yield 2.13%  
Amortized cost $ 513,977 553,721
Total, yield 2.13%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 0  
Due after one year through five years, amount 5  
Due after five years though ten years, amount 40  
Due after ten years, amount 23,559  
Fair Value 23,604  
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in one year or less, amount 0  
Due after one year through five years, amount 0  
Due after five years though ten years, amount 13  
Due after ten years, amount 419,853  
Held-to-maturity, fair value 419,866 547,210
Agency-collateralized mortgage obligations    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 0  
Due in one year or less, yield 0.00%  
Due after one year through five years, amount $ 15  
Due after one year through five years, yield 2.60%  
Due after five years through ten years, amount $ 0  
Due after five years through ten years, yield 0.00%  
Due after ten years, amount $ 2,574  
Due after ten years, yield 2.91%  
Amount $ 2,589  
Total, yield 2.91%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 0  
Due after one year through five years, amount 15  
Due after five years though ten years, amount 0  
Due after ten years, amount 2,354  
Fair Value 2,369  
Commercial    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 36  
Due in one year or less, yield 2.22%  
Due after one year through five years, amount $ 488  
Due after one year through five years, yield 2.79%  
Due after five years through ten years, amount $ 4,227  
Due after five years through ten years, yield 1.78%  
Due after ten years, amount $ 1,509  
Due after ten years, yield 2.07%  
Amount $ 6,260  
Total, yield 1.93%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 36  
Due after one year through five years, amount 473  
Due after five years though ten years, amount 3,977  
Due after ten years, amount 1,297  
Fair Value 5,783  
Non-agency residential    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 0  
Due in one year or less, yield 0.00%  
Due after one year through five years, amount $ 0  
Due after one year through five years, yield 0.00%  
Due after five years through ten years, amount $ 0  
Due after five years through ten years, yield 0.00%  
Due after ten years, amount $ 867  
Due after ten years, yield 8.31%  
Amount $ 867  
Total, yield 8.31%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 0  
Due after one year through five years, amount 2  
Due after five years though ten years, amount 0  
Due after ten years, amount 787  
Fair Value 789  
U.S. Treasury and government agencies    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 7,222  
Due in one year or less, yield 1.40%  
Due after one year through five years, amount $ 62,354  
Due after one year through five years, yield 1.76%  
Due after five years through ten years, amount $ 100,285  
Due after five years through ten years, yield 1.65%  
Due after ten years, amount $ 28  
Due after ten years, yield 3.00%  
Amount $ 169,889  
Total, yield 1.68%  
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]    
Due in one year or less, amount $ 0  
Due in one year or less, yield 0.00%  
Due after one year through five years, amount $ 4,539  
Due after one year through five years, yield 1.80%  
Due after five years through ten years, amount $ 117,046  
Due after five years though ten years, yield 1.37%  
Due after ten years, amount $ 0  
Due after ten years, yield 0.00%  
Amortized cost $ 121,585 111,859
Total, yield 1.39%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 7,250  
Due after one year through five years, amount 61,839  
Due after five years though ten years, amount 99,020  
Due after ten years, amount 25  
Fair Value 168,134  
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in one year or less, amount 0  
Due after one year through five years, amount 4,129  
Due after five years though ten years, amount 96,367  
Due after ten years, amount 0  
Held-to-maturity, fair value 100,496 109,718
Non-U.S. securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 17,773  
Due in one year or less, yield 1.67%  
Due after one year through five years, amount $ 2,429  
Due after one year through five years, yield 4.22%  
Due after five years through ten years, amount $ 6  
Due after five years through ten years, yield 4.24%  
Due after ten years, amount $ 128  
Due after ten years, yield 5.34%  
Amount $ 20,336  
Total, yield 2.00%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 17,466  
Due after one year through five years, amount 2,396  
Due after five years though ten years, amount 6  
Due after ten years, amount 121  
Fair Value 19,989  
Other taxable securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 1,635  
Due in one year or less, yield 3.56%  
Due after one year through five years, amount $ 1,241  
Due after one year through five years, yield 3.56%  
Due after five years through ten years, amount $ 469  
Due after five years through ten years, yield 3.04%  
Due after ten years, amount $ 136  
Due after ten years, yield 3.46%  
Amount $ 3,481  
Total, yield 3.49%  
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]    
Due in one year or less, amount $ 37  
Due in one year or less, yield 9.52%  
Due after one year through five years, amount $ 1,064  
Due after one year through five years, yield 2.13%  
Due after five years through ten years, amount $ 433  
Due after five years though ten years, yield 2.93%  
Due after ten years, amount $ 6,647  
Due after ten years, yield 2.49%  
Amortized cost $ 8,181 9,011
Total, yield 2.49%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 1,631  
Due after one year through five years, amount 1,224  
Due after five years though ten years, amount 428  
Due after ten years, amount 122  
Fair Value 3,405  
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in one year or less, amount 37  
Due after one year through five years, amount 993  
Due after five years though ten years, amount 401  
Due after ten years, amount 5,760  
Held-to-maturity, fair value 7,191 $ 8,962
Tax-exempt securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 939  
Due in one year or less, yield 1.60%  
Due after one year through five years, amount $ 5,135  
Due after one year through five years, yield 2.45%  
Due after five years through ten years, amount $ 2,330  
Due after five years through ten years, yield 2.67%  
Due after ten years, amount $ 4,140  
Due after ten years, yield 3.03%  
Amount $ 12,544  
Total, yield 2.62%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 937  
Due after one year through five years, amount 5,051  
Due after five years though ten years, amount 2,267  
Due after ten years, amount 3,917  
Fair Value $ 12,172