v3.21.2
Commitments, Contingencies and Guarantees - Commitments (Detail) - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Commitment Liabilities [Line Items]    
Total lending $ 210,011 $ 171,575
Risk participations 10,126 8,054
Collateralized agreement 110,120 55,278
Collateralized financing 34,584 35,402
Letters of credit 369 367
Investment 8,067 6,456
Other 9,608 7,836
Total commitments 382,885 284,968
Maturities, Year 1 [Member]    
Commitment Liabilities [Line Items]    
Total lending 36,846  
Risk participations 536  
Collateralized agreement 106,401  
Collateralized financing 34,584  
Letters of credit 205  
Investment 3,193  
Other 9,092  
Total commitments 190,857  
Maturities, Year 2 and Year 3 [Member]    
Commitment Liabilities [Line Items]    
Total lending 63,616  
Risk participations 5,237  
Collateralized agreement 3,719  
Letters of credit 123  
Investment 1,890  
Other 432  
Total commitments 75,017  
Maturities, Year 3 and Year 4 [Member]    
Commitment Liabilities [Line Items]    
Total lending 62,295  
Risk participations 3,093  
Investment 1,586  
Other 50  
Total commitments 67,024  
Maturities, Year 5 and Thereafter [Member]    
Commitment Liabilities [Line Items]    
Total lending 47,254  
Risk participations 1,260  
Letters of credit 41  
Investment 1,398  
Other 34  
Total commitments 49,987  
Investment Grade Commercial Lending [Member]    
Commitment Liabilities [Line Items]    
Total lending 95,800 83,801
Investment Grade Commercial Lending [Member] | Maturities, Year 1 [Member]    
Commitment Liabilities [Line Items]    
Total lending 6,015  
Investment Grade Commercial Lending [Member] | Maturities, Year 2 and Year 3 [Member]    
Commitment Liabilities [Line Items]    
Total lending 36,934  
Investment Grade Commercial Lending [Member] | Maturities, Year 3 and Year 4 [Member]    
Commitment Liabilities [Line Items]    
Total lending 34,405  
Investment Grade Commercial Lending [Member] | Maturities, Year 5 and Thereafter [Member]    
Commitment Liabilities [Line Items]    
Total lending 18,446  
Non Investment Grade Commercial Lending [Member]    
Commitment Liabilities [Line Items]    
Total lending 75,062 56,757
Non Investment Grade Commercial Lending [Member] | Maturities, Year 1 [Member]    
Commitment Liabilities [Line Items]    
Total lending 2,280  
Non Investment Grade Commercial Lending [Member] | Maturities, Year 2 and Year 3 [Member]    
Commitment Liabilities [Line Items]    
Total lending 21,397  
Non Investment Grade Commercial Lending [Member] | Maturities, Year 3 and Year 4 [Member]    
Commitment Liabilities [Line Items]    
Total lending 23,687  
Non Investment Grade Commercial Lending [Member] | Maturities, Year 5 and Thereafter [Member]    
Commitment Liabilities [Line Items]    
Total lending 27,698  
Warehouse Financing [Member]    
Commitment Liabilities [Line Items]    
Total lending 10,620 9,377
Warehouse Financing [Member] | Maturities, Year 1 [Member]    
Commitment Liabilities [Line Items]    
Total lending 22  
Warehouse Financing [Member] | Maturities, Year 2 and Year 3 [Member]    
Commitment Liabilities [Line Items]    
Total lending 5,285  
Warehouse Financing [Member] | Maturities, Year 3 and Year 4 [Member]    
Commitment Liabilities [Line Items]    
Total lending 4,203  
Warehouse Financing [Member] | Maturities, Year 5 and Thereafter [Member]    
Commitment Liabilities [Line Items]    
Total lending 1,110  
Credit cards [Member]    
Commitment Liabilities [Line Items]    
Total lending 28,529 $ 21,640
Credit cards [Member] | Maturities, Year 1 [Member]    
Commitment Liabilities [Line Items]    
Total lending $ 28,529