v3.21.2
Fair Value Option - Summary of DVA Losses on Financial Liabilities (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Fair Value, Option, Quantitative Disclosures [Line Items]        
DVA (net of tax) $ 117 $ (2,218) $ 98 $ 696
Other Financial Liabilities [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
DVA (pre-tax) 159 (2,938) 130 933
DVA (net of tax) $ 117 $ (2,218) $ 98 $ 696