v3.20.4
Fair Value Option - Financial Assets and Financial Liabilities by Level (Detail) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Resale agreements $ 108,060 $ 85,691
Securities borrowed 28,898 26,279
Customer and other receivables 82 53
Total financial assets at fair value 137,040 112,023
Deposits (16,176) (17,765)
Repurchase agreements (126,571) (117,756)
Securities loaned (1,053) (714)
Other secured financings (24,126) (18,071)
Unsecured borrowings Short-term (26,750) (26,007)
Unsecured borrowings Long-term (40,911) (43,661)
Other liabilities (263) (150)
Total financial liabilities at fair value (235,850) (224,124)
Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Resale agreements 108,060 85,691
Securities borrowed 28,898 26,279
Customer and other receivables 82 53
Total financial assets at fair value 137,040 112,023
Deposits (11,955) (13,742)
Repurchase agreements (126,569) (117,726)
Securities loaned (1,053) (714)
Other secured financings (20,652) (17,685)
Unsecured borrowings Short-term (19,227) (20,300)
Unsecured borrowings Long-term (28,335) (32,920)
Other liabilities (1) (1)
Total financial liabilities at fair value (207,792) (203,088)
Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Deposits (4,221) (4,023)
Repurchase agreements (2) (30)
Other secured financings (3,474) (386)
Unsecured borrowings Short-term (7,523) (5,707)
Unsecured borrowings Long-term (12,576) (10,741)
Other liabilities (262) (149)
Total financial liabilities at fair value $ (28,058) $ (21,036)