XML 66 R57.htm IDEA: XBRL DOCUMENT v3.22.1
Securities - Gross unrealized losses and related fair values (Detail)
$ in Millions
Mar. 31, 2022
USD ($)
security
Dec. 31, 2021
USD ($)
security
Debt Securities, Available-for-sale [Line Items]    
Number of securities available for sale in one year or less | security 405 141
Securities available-for-sale gross unrealized losses one year or less $ (994) $ (276)
Securities available-for-sale aggregate fair value of investment one year or less $ 20,251 $ 18,168
Number of Securities available for sale greater than one year | security 86 41
Securities available-for-sale gross unrealized losses greater than one year $ (527) $ (86)
Securities available-for-sale aggregate fair value of investment greater than one year $ 5,748 $ 2,080
U.S. Treasury    
Debt Securities, Available-for-sale [Line Items]    
Number of securities available for sale in one year or less | security 25 11
Securities available-for-sale gross unrealized losses one year or less $ (78) $ (28)
Securities available-for-sale aggregate fair value of investment one year or less $ 4,007 $ 1,784
Number of Securities available for sale greater than one year | security 14 9
Securities available-for-sale gross unrealized losses greater than one year $ (83) $ (44)
Securities available-for-sale aggregate fair value of investment greater than one year $ 1,431 $ 856
U.S. Government sponsored enterprises    
Debt Securities, Available-for-sale [Line Items]    
Number of securities available for sale in one year or less | security 253 63
Securities available-for-sale gross unrealized losses one year or less $ (276) $ (155)
Securities available-for-sale aggregate fair value of investment one year or less $ 5,659 $ 6,224
Number of Securities available for sale greater than one year | security 52 14
Securities available-for-sale gross unrealized losses greater than one year $ (372) $ (12)
Securities available-for-sale aggregate fair value of investment greater than one year $ 3,472 $ 354
U.S. Government agency issued or guaranteed    
Debt Securities, Available-for-sale [Line Items]    
Number of securities available for sale in one year or less | security 115 59
Securities available-for-sale gross unrealized losses one year or less $ (632) $ (91)
Securities available-for-sale aggregate fair value of investment one year or less $ 9,486 $ 8,972
Number of Securities available for sale greater than one year | security 16 15
Securities available-for-sale gross unrealized losses greater than one year $ (62) $ (24)
Securities available-for-sale aggregate fair value of investment greater than one year $ 712 $ 769
Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Number of securities available for sale in one year or less | security 3 0
Securities available-for-sale gross unrealized losses one year or less $ (1) $ 0
Securities available-for-sale aggregate fair value of investment one year or less $ 17 $ 0
Number of Securities available for sale greater than one year | security 3 3
Securities available-for-sale gross unrealized losses greater than one year $ (9) $ (6)
Securities available-for-sale aggregate fair value of investment greater than one year $ 97 $ 101
Foreign debt securities    
Debt Securities, Available-for-sale [Line Items]    
Number of securities available for sale in one year or less | security 9 8
Securities available-for-sale gross unrealized losses one year or less $ (7) $ (2)
Securities available-for-sale aggregate fair value of investment one year or less $ 1,082 $ 1,188
Number of Securities available for sale greater than one year | security 1 0
Securities available-for-sale gross unrealized losses greater than one year $ (1) $ 0
Securities available-for-sale aggregate fair value of investment greater than one year $ 36 $ 0