Consolidated Comprehensive Income Statement - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 2,536	$ 3,512	$ 6,251	$ 7,680
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(288)	41	(393)	(178)
Change in net unrealized gains (losses) on available-for-sale securities	(1,076)	(7)	(3,471)	(783)
Pension and other	3	12	8	17
Change in net debt valuation adjustment	1,152	186	1,812	323
Total other comprehensive income (loss)	(209)	232	(2,044)	(621)
Comprehensive income	2,327	3,744	4,207	7,059
Net income applicable to noncontrolling interests	41	1	90	49
Other comprehensive income (loss) applicable to noncontrolling interests	(90)	1	(125)	(60)
Comprehensive income applicable to Morgan Stanley	$ 2,376	$ 3,742	$ 4,242	$ 7,070