v3.21.2
Fair Value Option - Financial Assets and Financial Liabilities by Level (Detail) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Resale agreements $ 213,062 $ 108,060  
Securities borrowed 34,437 28,898  
Customer and other receivables 46 82  
Total financial assets at fair value 247,545 137,040  
Deposits (34,078) (16,176) $ (34,078)
Repurchase agreements (167,339) (126,571)  
Securities loaned (7,298) (1,053) (7,298)
Other secured financings (18,208) (24,126) (18,208)
Unsecured borrowings Short-term (30,447) (26,750) (30,447)
Unsecured borrowings Long-term (47,880) (40,911) (47,880)
Other liabilities (166) (263) $ (166)
Total financial liabilities at fair value (305,416) (235,850)  
Level 2 [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Resale agreements 213,062 108,060  
Securities borrowed 34,437 28,898  
Customer and other receivables 46 82  
Total financial assets at fair value 247,545 137,040  
Deposits (30,441) (11,955)  
Repurchase agreements (167,339) (126,569)  
Securities loaned (7,298) (1,053)  
Other secured financings (15,568) (20,652)  
Unsecured borrowings Short-term (21,778) (19,227)  
Unsecured borrowings Long-term (38,654) (28,335)  
Other liabilities (1) (1)  
Total financial liabilities at fair value (281,079) (207,792)  
Level 3 [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Deposits (3,637) (4,221)  
Repurchase agreements   (2)  
Other secured financings (2,640) (3,474)  
Unsecured borrowings Short-term (8,669) (7,523)  
Unsecured borrowings Long-term (9,226) (12,576)  
Other liabilities (165) (262)  
Total financial liabilities at fair value $ (24,337) $ (28,058)