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
Jun. 30, 2021
Dec. 31, 2020
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]    
Due in one year or less, amount $ 54  
Due in one year or less, yield 2.71%  
Due after one year through five years, amount $ 715  
Due after one year through five years, yield 2.42%  
Due after five years through ten years, amount $ 94,754  
Due after five years though ten years, yield 1.38%  
Due after ten years, amount $ 555,911  
Due after ten years, yield 2.19%  
Amortized cost $ 651,434 $ 438,279
Total, yield 2.07%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Fair Value $ 288,913 246,601
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in one year or less, amount 53  
Due after one year through five years, amount 753  
Due after five years though ten years, amount 93,085  
Due after ten years, amount 556,134  
Held-to-maturity, fair value 650,025 448,180
Mortgage-backed securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 364  
Due in one year or less, yield 2.31%  
Due after one year through five years, amount $ 8,415  
Due after one year through five years, yield 2.50%  
Due after five years through ten years, amount $ 6,840  
Due after five years through ten years, yield 1.96%  
Due after ten years, amount $ 64,325  
Due after ten years, yield 3.17%  
Total, amount $ 79,944  
Total, yield 2.99%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 369  
Due after one year through five years, amount 8,890  
Due after five years though ten years, amount 7,137  
Due after ten years, amount 66,236  
Fair Value 82,632  
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 $ 7  
Due after one year through five years, yield 5.39%  
Due after five years through ten years, amount $ 54  
Due after five years through ten years, yield 4.48%  
Due after ten years, amount $ 56,197  
Due after ten years, yield 3.14%  
Total, amount $ 56,258  
Total, yield 3.14%  
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 $ 0  
Due after five years though ten years, yield 0.00%  
Due after ten years, amount $ 547,508  
Due after ten years, yield 2.18%  
Amortized cost $ 547,508 414,289
Total, yield 2.18%  
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 6  
Due after five years though ten years, amount 60  
Due after ten years, amount 57,823  
Fair Value 57,889  
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 0  
Due after ten years, amount 547,699  
Held-to-maturity, fair value 547,699 424,021
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 2.50%  
Due after ten years, amount $ 4,090  
Due after ten years, yield 2.92%  
Total, amount $ 4,111  
Total, yield 2.92%  
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 4,205  
Fair Value 4,226  
Commercial    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 364  
Due in one year or less, yield 2.31%  
Due after one year through five years, amount $ 8,408  
Due after one year through five years, yield 2.50%  
Due after five years through ten years, amount $ 6,765  
Due after five years through ten years, yield 1.94%  
Due after ten years, amount $ 2,538  
Due after ten years, yield 2.16%  
Total, amount $ 18,075  
Total, yield 2.24%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 369  
Due after one year through five years, amount 8,884  
Due after five years though ten years, amount 7,050  
Due after ten years, amount 2,629  
Fair Value 18,932  
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 $ 1,500  
Due after ten years, yield 6.55%  
Total, amount $ 1,500  
Total, yield 6.55%  
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 6  
Due after ten years, amount 1,579  
Fair Value 1,585  
U.S. Treasury and agency securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 4,558  
Due in one year or less, yield 1.11%  
Due after one year through five years, amount $ 29,528  
Due after one year through five years, yield 1.85%  
Due after five years through ten years, amount $ 125,093  
Due after five years through ten years, yield 0.81%  
Due after ten years, amount $ 32  
Due after ten years, yield 2.53%  
Total, amount $ 159,211  
Total, yield 1.02%  
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 $ 94,353  
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 $ 94,353 16,084
Total, yield 1.37%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 4,582  
Due after one year through five years, amount 30,758  
Due after five years though ten years, amount 125,479  
Due after ten years, amount 33  
Fair Value 160,852  
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 92,663  
Due after ten years, amount 0  
Held-to-maturity, fair value 92,663 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 $ 24,990  
Due in one year or less, yield 0.31%  
Due after one year through five years, amount $ 1,291  
Due after one year through five years, yield 1.75%  
Due after five years through ten years, amount $ 330  
Due after five years through ten years, yield 1.12%  
Due after ten years, amount $ 65  
Due after ten years, yield 20.09%  
Total, amount $ 26,676  
Total, yield 0.44%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 24,930  
Due after one year through five years, amount 1,304  
Due after five years though ten years, amount 334  
Due after ten years, amount 66  
Fair Value 26,634  
Other taxable securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 869  
Due in one year or less, yield 1.37%  
Due after one year through five years, amount $ 1,401  
Due after one year through five years, yield 2.24%  
Due after five years through ten years, amount $ 352  
Due after five years through ten years, yield 1.85%  
Due after ten years, amount $ 251  
Due after ten years, yield 1.63%  
Total, amount $ 2,873  
Total, yield 1.88%  
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]    
Due in one year or less, amount $ 54  
Due in one year or less, yield 2.71%  
Due after one year through five years, amount $ 715  
Due after one year through five years, yield 2.42%  
Due after five years through ten years, amount $ 401  
Due after five years though ten years, yield 2.85%  
Due after ten years, amount $ 8,403  
Due after ten years, yield 2.55%  
Amortized cost $ 9,573 7,906
Total, yield 2.55%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 873  
Due after one year through five years, amount 1,431  
Due after five years though ten years, amount 361  
Due after ten years, amount 256  
Fair Value 2,921  
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in one year or less, amount 53  
Due after one year through five years, amount 753  
Due after five years though ten years, amount 422  
Due after ten years, amount 8,435  
Held-to-maturity, fair value 9,663 $ 8,146
Total taxable securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 30,781  
Due in one year or less, yield 0.48%  
Due after one year through five years, amount $ 40,635  
Due after one year through five years, yield 1.99%  
Due after five years through ten years, amount $ 132,615  
Due after five years through ten years, yield 0.88%  
Due after ten years, amount $ 64,673  
Due after ten years, yield 3.18%  
Total, amount $ 268,704  
Total, yield 1.55%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 30,754  
Due after one year through five years, amount 42,383  
Due after five years though ten years, amount 133,311  
Due after ten years, amount 66,591  
Fair Value 273,039  
Tax-exempt securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 1,426  
Due in one year or less, yield 1.04%  
Due after one year through five years, amount $ 8,124  
Due after one year through five years, yield 1.31%  
Due after five years through ten years, amount $ 3,414  
Due after five years through ten years, yield 1.68%  
Due after ten years, amount $ 2,563  
Due after ten years, yield 1.32%  
Total, amount $ 15,527  
Total, yield 1.37%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 1,431  
Due after one year through five years, amount 8,284  
Due after five years though ten years, amount 3,552  
Due after ten years, amount 2,607  
Fair Value 15,874  
Debt securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 32,207  
Due in one year or less, yield 0.51%  
Due after one year through five years, amount $ 48,759  
Due after one year through five years, yield 1.88%  
Due after five years through ten years, amount $ 136,029  
Due after five years through ten years, yield 0.90%  
Due after ten years, amount $ 67,236  
Due after ten years, yield 3.11%  
Total, amount $ 284,231  
Total, yield 1.55%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 32,185  
Due after one year through five years, amount 50,667  
Due after five years though ten years, amount 136,863  
Due after ten years, amount 69,198  
Fair Value $ 288,913