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)

v3.23.2
Securities - Maturities of Debt Securities Carried at Fair Value and Held-to-maturity Debt Securities (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]    
Due in one year or less, amount $ 41  
Due in one year or less, yield 9.33%  
Due after one year through five years, amount $ 5,828  
Due after one year through five years, yield 1.94%  
Due after five years through ten years, amount $ 117,359  
Due after five years though ten years, yield 1.37%  
Due after ten years, amount $ 490,921  
Due after ten years, yield 2.12%  
Amortized Cost $ 614,149 $ 632,863
Total, yield 1.97%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Fair Value $ 142,040 229,994
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in One Year or Less 41  
Due after One Year through Five Years 5,365  
Due after Five Years through Ten Years 97,940  
Due after Ten Years 405,005  
Held-to-maturity, fair value 508,351 524,267
AFS securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 21,786  
Due in one year or less, yield 2.35%  
Due after one year through five years, amount $ 50,250  
Due after one year through five years, yield 3.18%  
Due after five years through ten years, amount $ 41,144  
Due after five years through ten years, yield 2.72%  
Due after ten years, amount $ 32,512  
Due after ten years, yield 3.61%  
Amount $ 145,692  
Total, yield 3.02%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 21,764  
Due after one year through five years, amount 49,617  
Due after five years though ten years, amount 40,323  
Due after ten years, amount 30,336  
Fair Value 142,040  
Mortgage-backed securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 13  
Due in one year or less, yield 1.85%  
Due after one year through five years, amount $ 795  
Due after one year through five years, yield 2.99%  
Due after five years through ten years, amount $ 4,640  
Due after five years through ten years, yield 2.40%  
Due after ten years, amount $ 27,920  
Due after ten years, yield 3.49%  
Amount $ 33,368  
Total, yield 3.33%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 13  
Due after one year through five years, amount 772  
Due after five years though ten years, amount 4,409  
Due after ten years, amount 25,949  
Fair Value 31,143  
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 $ 3  
Due after one year through five years, yield 4.67%  
Due after five years through ten years, amount $ 53  
Due after five years through ten years, yield 4.85%  
Due after ten years, amount $ 23,565  
Due after ten years, yield 3.41%  
Amount $ 23,621  
Total, yield 3.41%  
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 $ 13  
Due after five years though ten years, yield 2.62%  
Due after ten years, amount $ 484,740  
Due after ten years, yield 2.12%  
Amortized Cost $ 484,753 503,233
Total, yield 2.12%  
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 3  
Due after five years though ten years, amount 53  
Due after ten years, amount 22,097  
Fair Value 22,153  
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in One Year or Less 0  
Due after One Year through Five Years 0  
Due after Five Years through Ten Years 12  
Due after Ten Years 399,736  
Held-to-maturity, fair value 399,748 415,914
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 $ 2  
Due after one year through five years, yield 2.00%  
Due after five years through ten years, amount $ 0  
Due after five years through ten years, yield 0.00%  
Due after ten years, amount $ 2,031  
Due after ten years, yield 2.79%  
Amount $ 2,033  
Total, yield 2.79%  
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 1,801  
Fair Value 1,803  
Commercial    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 13  
Due in one year or less, yield 1.85%  
Due after one year through five years, amount $ 790  
Due after one year through five years, yield 2.99%  
Due after five years through ten years, amount $ 4,587  
Due after five years through ten years, yield 2.37%  
Due after ten years, amount $ 1,588  
Due after ten years, yield 2.33%  
Amount $ 6,978  
Total, yield 2.43%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 13  
Due after one year through five years, amount 765  
Due after five years though ten years, amount 4,356  
Due after ten years, amount 1,358  
Fair Value 6,492  
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 $ 736  
Due after ten years, yield 10.62%  
Amount $ 736  
Total, yield 10.62%  
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 693  
Fair Value 695  
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 $ 4,012  
Due in one year or less, yield 4.35%  
Due after one year through five years, amount $ 38,478  
Due after one year through five years, yield 3.12%  
Due after five years through ten years, amount $ 30,720  
Due after five years through ten years, yield 2.43%  
Due after ten years, amount $ 37  
Due after ten years, yield 3.79%  
Amount $ 73,247  
Total, yield 2.90%  
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 $ 4,553  
Due after one year through five years, yield 1.80%  
Due after five years through ten years, amount $ 117,068  
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 $ 121,621 121,597
Total, yield 1.39%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 4,010  
Due after one year through five years, amount 37,941  
Due after five years though ten years, amount 30,195  
Due after ten years, amount 36  
Fair Value 72,182  
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in One Year or Less 0  
Due after One Year through Five Years 4,171  
Due after Five Years through Ten Years 97,662  
Due after Ten Years 0  
Held-to-maturity, fair value 101,833 101,338
Non-U.S. securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 16,323  
Due in one year or less, yield 1.69%  
Due after one year through five years, amount $ 4,093  
Due after one year through five years, yield 2.20%  
Due after five years through ten years, amount $ 3,371  
Due after five years through ten years, yield 5.07%  
Due after ten years, amount $ 548  
Due after ten years, yield 5.14%  
Amount $ 24,335  
Total, yield 2.32%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 16,307  
Due after one year through five years, amount 4,093  
Due after five years though ten years, amount 3,362  
Due after ten years, amount 546  
Fair Value 24,308  
Other taxable securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 477  
Due in one year or less, yield 5.58%  
Due after one year through five years, amount $ 2,865  
Due after one year through five years, yield 4.66%  
Due after five years through ten years, amount $ 309  
Due after five years through ten years, yield 3.03%  
Due after ten years, amount $ 207  
Due after ten years, yield 4.47%  
Amount $ 3,858  
Total, yield 4.64%  
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]    
Due in one year or less, amount $ 41  
Due in one year or less, yield 9.33%  
Due after one year through five years, amount $ 1,275  
Due after one year through five years, yield 2.43%  
Due after five years through ten years, amount $ 278  
Due after five years though ten years, yield 3.24%  
Due after ten years, amount $ 6,181  
Due after ten years, yield 2.48%  
Amortized Cost $ 7,775 8,033
Total, yield 2.53%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 474  
Due after one year through five years, amount 2,830  
Due after five years though ten years, amount 276  
Due after ten years, amount 197  
Fair Value 3,777  
Held-to-maturity Securities, Debt Maturities, Fair Value [Abstract]    
Due in One Year or Less 41  
Due after One Year through Five Years 1,194  
Due after Five Years through Ten Years 266  
Due after Ten Years 5,269  
Held-to-maturity, fair value 6,770 $ 7,015
Tax-exempt securities    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 961  
Due in one year or less, yield 3.66%  
Due after one year through five years, amount $ 4,019  
Due after one year through five years, yield 3.79%  
Due after five years through ten years, amount $ 2,104  
Due after five years through ten years, yield 3.82%  
Due after ten years, amount $ 3,800  
Due after ten years, yield 4.23%  
Amount $ 10,884  
Total, yield 3.94%  
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]    
Due in one year or less, amount $ 960  
Due after one year through five years, amount 3,981  
Due after five years though ten years, amount 2,081  
Due after ten years, amount 3,608  
Fair Value $ 10,630