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)

v3.20.2
Securities - Maturities of Debt Securities Carried at Fair Value and Held-to-maturity Debt Securities (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]    
Due in one year or less, amount $ 310  
Due in one year or less, yield 1.98%  
Due after one year through five years, amount $ 46  
Due after one year through five years, yield 3.62%  
Due after five years through ten years, amount $ 17,258  
Due after five years though ten years, yield 0.84%  
Due after ten years, amount $ 251,353  
Due after ten years, yield 3.07%  
Amortized cost $ 268,967 $ 215,730
Total, yield 2.93%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Debt securities carried at fair value $ 202,912 256,467
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in one year or less, amount 310  
Due after one year through five years, amount 46  
Due after five years though ten years, amount 17,508  
Due after ten years, amount 262,008  
Held-to-maturity, fair value 279,872 $ 219,821
Mortgage-backed securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 15  
Due in one year or less, yield 2.81%  
Due after one year through five years, amount $ 5,923  
Due after one year through five years, yield 2.49%  
Due after five years through ten years, amount $ 8,089  
Due after five years through ten years, yield 2.52%  
Due after ten years, amount $ 85,649  
Due after ten years, yield 3.42%  
Total, amount $ 99,676  
Total, yield 3.29%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 17  
Due after one year through five years, amount 6,265  
Due after five years though ten years, amount 8,674  
Due after ten years, amount 88,475  
Debt securities carried at fair value 103,431  
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 $ 8  
Due after one year through five years, yield 4.80%  
Due after five years through ten years, amount $ 62  
Due after five years through ten years, yield 4.48%  
Due after ten years, amount $ 76,469  
Due after ten years, yield 3.35%  
Total, amount $ 76,539  
Total, yield 3.35%  
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 9  
Due after five years though ten years, amount 67  
Due after ten years, amount 78,923  
Debt securities carried at fair value 78,999  
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 $ 25  
Due after five years through ten years, yield 2.52%  
Due after ten years, amount $ 6,088  
Due after ten years, yield 2.96%  
Total, amount $ 6,113  
Total, yield 2.96%  
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 26  
Due after ten years, amount 6,269  
Debt securities carried at fair value 6,295  
Commercial    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 15  
Due in one year or less, yield 2.81%  
Due after one year through five years, amount $ 5,915  
Due after one year through five years, yield 2.49%  
Due after five years through ten years, amount $ 7,991  
Due after five years through ten years, yield 2.51%  
Due after ten years, amount $ 1,017  
Due after ten years, yield 2.83%  
Total, amount $ 14,938  
Total, yield 2.52%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 17  
Due after one year through five years, amount 6,256  
Due after five years though ten years, amount 8,558  
Due after ten years, amount 1,104  
Debt securities carried at fair value 15,935  
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 $ 11  
Due after five years through ten years, yield 0.00%  
Due after ten years, amount $ 2,075  
Due after ten years, yield 7.58%  
Total, amount $ 2,086  
Total, yield 7.54%  
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 23  
Due after ten years, amount 2,179  
Debt securities carried at fair value 2,202  
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 $ 9,096  
Due in one year or less, yield 1.28%  
Due after one year through five years, amount $ 28,239  
Due after one year through five years, yield 1.76%  
Due after five years through ten years, amount $ 12,939  
Due after five years through ten years, yield 2.41%  
Due after ten years, amount $ 33  
Due after ten years, yield 2.56%  
Total, amount $ 50,307  
Total, yield 1.84%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 9,165  
Due after one year through five years, amount 29,483  
Due after five years though ten years, amount 13,985  
Due after ten years, amount 34  
Debt securities carried at fair value 52,667  
Non-U.S. securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 22,980  
Due in one year or less, yield 0.38%  
Due after one year through five years, amount $ 1,328  
Due after one year through five years, yield 1.55%  
Due after five years through ten years, amount $ 11  
Due after five years through ten years, yield 4.02%  
Due after ten years, amount $ 83  
Due after ten years, yield 11.43%  
Total, amount $ 24,402  
Total, yield 0.49%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 23,158  
Due after one year through five years, amount 1,328  
Due after five years though ten years, amount 11  
Due after ten years, amount 84  
Debt securities carried at fair value 24,581  
Other taxable securities, substantially all asset-backed securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 1,377  
Due in one year or less, yield 1.39%  
Due after one year through five years, amount $ 1,759  
Due after one year through five years, yield 2.40%  
Due after five years through ten years, amount $ 527  
Due after five years through ten years, yield 2.24%  
Due after ten years, amount $ 581  
Due after ten years, yield 2.01%  
Total, amount $ 4,244  
Total, yield 2.00%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 1,380  
Due after one year through five years, amount 1,758  
Due after five years though ten years, amount 525  
Due after ten years, amount 592  
Debt securities carried at fair value 4,255  
Total taxable securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 33,468  
Due in one year or less, yield 0.66%  
Due after one year through five years, amount $ 37,249  
Due after one year through five years, yield 1.89%  
Due after five years through ten years, amount $ 21,566  
Due after five years through ten years, yield 2.44%  
Due after ten years, amount $ 86,346  
Due after ten years, yield 3.41%  
Total, amount $ 178,629  
Total, yield 2.46%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 33,720  
Due after one year through five years, amount 38,834  
Due after five years though ten years, amount 23,195  
Due after ten years, amount 89,185  
Debt securities carried at fair value 184,934  
Tax-exempt securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 1,224  
Due in one year or less, yield 0.95%  
Due after one year through five years, amount $ 7,938  
Due after one year through five years, yield 1.25%  
Due after five years through ten years, amount $ 5,670  
Due after five years through ten years, yield 1.61%  
Due after ten years, amount $ 2,959  
Due after ten years, yield 1.51%  
Total, amount $ 17,791  
Total, yield 1.39%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 1,225  
Due after one year through five years, amount 7,966  
Due after five years though ten years, amount 5,778  
Due after ten years, amount 3,009  
Debt securities carried at fair value 17,978  
Debt securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 34,692  
Due in one year or less, yield 0.66%  
Due after one year through five years, amount $ 45,187  
Due after one year through five years, yield 1.75%  
Due after five years through ten years, amount $ 27,236  
Due after five years through ten years, yield 2.21%  
Due after ten years, amount $ 89,305  
Due after ten years, yield 3.35%  
Total, amount $ 196,420  
Total, yield 2.35%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 34,945  
Due after one year through five years, amount 46,800  
Due after five years though ten years, amount 28,973  
Due after ten years, amount 92,194  
Debt securities carried at fair value $ 202,912