Quarterly report pursuant to Section 13 or 15(d)

Securities - Narrative (Details)

v3.22.1
Securities - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]    
Fair Value $ 289,287 $ 299,178
Other assets    
Debt Securities, Available-for-sale [Line Items]    
Equity securities, fair value 510 513
Equity securities, cost 296 266
Time Deposits Placed and Other Short-term Investments    
Debt Securities, Available-for-sale [Line Items]    
Time deposits placed and other short-term investments 729 707
Debt securities    
Debt Securities, Available-for-sale [Line Items]    
Accumulated net unrealized gain (loss) on AFS debt securities (962)  
Accumulated other comprehensive income tax expense (benefit) (309)  
U.S. Agency And U.S. Treasury Securities    
Debt Securities, Available-for-sale [Line Items]    
Fair Value 254,400 268,500
All Non U.S. Agency And Non U.S. Treasury Securities    
Debt Securities, Available-for-sale [Line Items]    
Fair Value $ 34,900 $ 30,700