Regulatory Requirements - The Firm's Regulatory Capital and Capital Ratios (Details) $ in Millions	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Required Ratio
Common Equity Tier 1 capital (as a percent)	13.20%	13.20%
Tier 1 capital (as a percent)	0.147	0.147
Total capital (as a percent)	0.167	0.167
Tier 1 leverage (as a percent)	0.040
SLR (as a percent)	5.00%
Amount
Common Equity Tier 1 capital	$ 72,477	$ 75,742
Tier 1 capital	80,121	83,348
Total capital	89,468	93,166
Total RWA	501,429	471,921
Adjusted average assets	1,184,494	1,169,939
Supplementary leverage exposure	$ 1,466,624	$ 1,476,962
Ratio
Common Equity Tier 1 capital (as a percent)	0.145	0.160
Tier 1 capital (as a percent)	0.160	0.177
Total capital (as a percent)	0.178	0.197
Tier 1 leverage (as a percent)	0.068	0.071
SLR (as a percent)	0.055	0.056