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)

v3.21.2
Securities - Maturities of Debt Securities Carried at Fair Value and Held-to-maturity Debt Securities (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]    
Due in one year or less, amount $ 234  
Due in one year or less, yield 6.51%  
Due after one year through five years, amount $ 824  
Due after one year through five years, yield 2.36%  
Due after five years through ten years, amount $ 112,173  
Due after five years though ten years, yield 1.35%  
Due after ten years, amount $ 570,043  
Due after ten years, yield 2.16%  
Amortized cost $ 683,274 $ 438,279
Total, yield 2.03%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Fair Value $ 285,377 246,601
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in one year or less, amount 234  
Due after one year through five years, amount 863  
Due after five years though ten years, amount 109,738  
Due after ten years, amount 567,498  
Held-to-maturity, fair value 678,333 448,180
Mortgage-backed securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 354  
Due in one year or less, yield 2.32%  
Due after one year through five years, amount $ 10,262  
Due after one year through five years, yield 2.48%  
Due after five years through ten years, amount $ 5,931  
Due after five years through ten years, yield 1.78%  
Due after ten years, amount $ 57,439  
Due after ten years, yield 3.17%  
Total, amount $ 73,986  
Total, yield 2.96%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 358  
Due after one year through five years, amount 10,803  
Due after five years though ten years, amount 6,080  
Due after ten years, amount 59,174  
Fair Value 76,415  
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 4.73%  
Due after five years through ten years, amount $ 53  
Due after five years through ten years, yield 4.51%  
Due after ten years, amount $ 50,698  
Due after ten years, yield 3.12%  
Total, amount $ 50,756  
Total, yield 3.12%  
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 $ 4  
Due after five years though ten years, yield 2.33%  
Due after ten years, amount $ 562,120  
Due after ten years, yield 2.15%  
Amortized cost $ 562,124 414,289
Total, yield 2.15%  
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 57  
Due after ten years, amount 52,235  
Fair Value 52,297  
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 4  
Due after ten years, amount 559,586  
Held-to-maturity, fair value 559,590 424,021
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 $ 0  
Due after one year through five years, yield 0.00%  
Due after five years through ten years, amount $ 21  
Due after five years through ten years, yield 2.52%  
Due after ten years, amount $ 3,663  
Due after ten years, yield 2.91%  
Total, amount $ 3,684  
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 0  
Due after five years though ten years, amount 21  
Due after ten years, amount 3,755  
Fair Value 3,776  
Commercial    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 354  
Due in one year or less, yield 2.32%  
Due after one year through five years, amount $ 10,257  
Due after one year through five years, yield 2.48%  
Due after five years through ten years, amount $ 5,857  
Due after five years through ten years, yield 1.75%  
Due after ten years, amount $ 1,636  
Due after ten years, yield 2.18%  
Total, amount $ 18,104  
Total, yield 2.21%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 358  
Due after one year through five years, amount 10,798  
Due after five years though ten years, amount 5,998  
Due after ten years, amount 1,678  
Fair Value 18,832  
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 $ 1,442  
Due after ten years, yield 6.59%  
Total, amount $ 1,442  
Total, yield 6.59%  
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 0  
Due after five years though ten years, amount 4  
Due after ten years, amount 1,506  
Fair Value 1,510  
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 $ 4,988  
Due in one year or less, yield 1.25%  
Due after one year through five years, amount $ 33,785  
Due after one year through five years, yield 1.65%  
Due after five years through ten years, amount $ 128,893  
Due after five years through ten years, yield 1.07%  
Due after ten years, amount $ 29  
Due after ten years, yield 2.57%  
Total, amount $ 167,695  
Total, yield 1.20%  
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 $ 111,855  
Due after five years though ten years, yield 1.35%  
Due after ten years, amount $ 0  
Due after ten years, yield 0.00%  
Amortized cost $ 111,855 16,084
Total, yield 1.35%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 5,024  
Due after one year through five years, amount 34,884  
Due after five years though ten years, amount 129,463  
Due after ten years, amount 30  
Fair Value 169,401  
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 109,408  
Due after ten years, amount 0  
Held-to-maturity, fair value 109,408 16,013
Non-U.S. securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 20,658  
Due in one year or less, yield 0.30%  
Due after one year through five years, amount $ 370  
Due after one year through five years, yield 3.01%  
Due after five years through ten years, amount $ 344  
Due after five years through ten years, yield 1.03%  
Due after ten years, amount $ 61  
Due after ten years, yield 51.33%  
Total, amount $ 21,433  
Total, yield 0.51%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 20,534  
Due after one year through five years, amount 373  
Due after five years though ten years, amount 347  
Due after ten years, amount 59  
Fair Value 21,313  
Other taxable securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 666  
Due in one year or less, yield 1.53%  
Due after one year through five years, amount $ 1,336  
Due after one year through five years, yield 2.27%  
Due after five years through ten years, amount $ 341  
Due after five years through ten years, yield 2.44%  
Due after ten years, amount $ 246  
Due after ten years, yield 1.63%  
Total, amount $ 2,589  
Total, yield 2.04%  
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]    
Due in one year or less, amount $ 234  
Due in one year or less, yield 6.51%  
Due after one year through five years, amount $ 824  
Due after one year through five years, yield 2.36%  
Due after five years through ten years, amount $ 314  
Due after five years though ten years, yield 3.05%  
Due after ten years, amount $ 7,923  
Due after ten years, yield 2.52%  
Amortized cost $ 9,295 7,906
Total, yield 2.63%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 671  
Due after one year through five years, amount 1,368  
Due after five years though ten years, amount 346  
Due after ten years, amount 251  
Fair Value 2,636  
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in one year or less, amount 234  
Due after one year through five years, amount 863  
Due after five years though ten years, amount 326  
Due after ten years, amount 7,912  
Held-to-maturity, fair value 9,335 $ 8,146
Tax-exempt securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 1,542  
Due in one year or less, yield 1.07%  
Due after one year through five years, amount $ 7,539  
Due after one year through five years, yield 1.35%  
Due after five years through ten years, amount $ 3,445  
Due after five years through ten years, yield 1.65%  
Due after ten years, amount $ 2,786  
Due after ten years, yield 1.40%  
Total, amount $ 15,312  
Total, yield 1.40%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 1,544  
Due after one year through five years, amount 7,681  
Due after five years though ten years, amount 3,577  
Due after ten years, amount 2,810  
Fair Value 15,612  
Debt securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 28,208  
Due in one year or less, yield 0.57%  
Due after one year through five years, amount $ 53,292  
Due after one year through five years, yield 1.79%  
Due after five years through ten years, amount $ 138,954  
Due after five years through ten years, yield 1.12%  
Due after ten years, amount $ 60,561  
Due after ten years, yield 3.13%  
Total, amount $ 281,015  
Total, yield 1.62%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 28,131  
Due after one year through five years, amount 55,109  
Due after five years though ten years, amount 139,813  
Due after ten years, amount 62,324  
Fair Value $ 285,377