Annual report pursuant to Section 13 and 15(d)

Securities - Narrative (Details)

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Securities - Narrative (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Other assets    
Investments, Debt And Equity Securities [Line Items]    
Equity securities, fair value $ 251 $ 581
Equity securities, cost 377 340
Time Deposits Placed and Other Short-term Investments    
Investments, Debt And Equity Securities [Line Items]    
Time deposits placed and other short-term investments 1,200 868
AFS securities    
Investments, Debt And Equity Securities [Line Items]    
Accumulated net unrealized loss on AFS debt securities 2,800  
Accumulated other comprehensive income benefit 960  
U.S. Agency And U.S. Treasury Securities    
Investments, Debt And Equity Securities [Line Items]    
AFS and HTM debt securities 824,900 826,500
All Non U.S. Agency And Non U.S. Treasury Securities    
Investments, Debt And Equity Securities [Line Items]    
AFS and HTM debt securities $ 40,200 $ 31,800