Regulatory Requirements - The Firm's Regulatory Capital and Capital Ratios (Details) $ in Millions	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
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	$ 75,742	$ 78,650
Tier 1 capital	83,348	88,079
Total capital	93,166	97,213
Total RWA	471,921	453,106
Adjusted average assets	1,169,939	1,053,510
Supplementary leverage exposure	$ 1,476,962	$ 1,192,506
Ratio
Common Equity Tier 1 capital (as a percent)	0.160	0.174
Tier 1 capital (as a percent)	0.177	0.194
Total capital (as a percent)	0.197	0.215
Tier 1 leverage (as a percent)	0.071	0.084
SLR (as a percent)	0.056	0.074