Trading Activities Net Interest Income and Net Gains (Losses) on Trading Activities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net Interest Income and Net Gains (Losses) from Trading Activities [Line Items]
Debt securities, interest income	$ 626	$ 512	$ 1,723	$ 1,537
Equity securities, interest income	156	146	519	415
Total interest income	14,494	9,834	36,231	29,573
Less: Interest expense	153	90	443	305
Net interest income	12,098	8,909	31,517	26,517
Debt securities, net gains (losses)	(3,551)	(284)	(10,302)	(1,621)
Equity securities, net gains (losses)	(1,393)	771	(5,823)	2,780
Loans held for sale, net gains (losses)	3	9	13	48
Other liabilities	34	0	57	0
Derivatives	5,807	(404)	17,619	(746)
Total net gains from trading activities	900	92	1,564	461
Total trading-related net interest and noninterest income	1,491	630	3,241	2,020
Related to trading activities [Member]
Net Interest Income and Net Gains (Losses) from Trading Activities [Line Items]
Equity securities, interest income	108	104	367	300
Loans held for sale, interest income	10	12	30	27
Total interest income	744	628	2,120	1,864
Net interest income	$ 591	$ 538	$ 1,677	$ 1,559