Consolidated Statement of Changes in Total Equity - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings		Retained Earnings Cumulative Effect, Period of Adoption, Adjustment		Employee Stock Trusts	Accumulated Other Comprehensive Income (Loss)	Common Stock Held in Treasury at Cost	Common Stock Issued to Employee Stock Trusts	Noncontrolling Interests
Beginning and ending balance at Dec. 31, 2022		$ 8,750	$ 20	$ 29,339	$ 94,862		$ 0	[1]	$ 4,881	$ (6,253)	$ (26,577)	$ (4,881)	$ 1,090
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based award activity				(483)					462		1,304	(462)
Net income applicable to Morgan Stanley	$ 2,980				2,980
Preferred stock dividends	(144)				(144)	[2]
Common stock dividends	(1,305)				(1,305)	[2]
Other net increases (decreases)					(1)								4
Net change in Accumulated other comprehensive income (loss)	523									542			(19)
Repurchases of common stock and employee tax withholdings											(2,208)
Net income applicable to noncontrolling interests	53												53
Ending balance at Mar. 31, 2023	101,954		20	28,856	96,392				5,343	(5,711)	(27,481)	(5,343)	1,128
Beginning and ending balance at Dec. 31, 2023	99,982	$ 8,750	20	29,832	97,996		$ (60)		5,314	(6,421)	(31,139)	(5,314)	944
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based award activity				(786)					(64)		1,485	64
Net income applicable to Morgan Stanley	3,412				3,412
Preferred stock dividends	(146)				(146)	[2]
Common stock dividends	(1,390)				(1,390)	[2]
Other net increases (decreases)					(1)								4
Net change in Accumulated other comprehensive income (loss)	(692)									(636)			(56)
Repurchases of common stock and employee tax withholdings											(1,718)
Net income applicable to noncontrolling interests	50												50
Ending balance at Mar. 31, 2024	$ 100,140		$ 20	$ 29,046	$ 99,811				$ 5,250	$ (7,057)	$ (31,372)	$ (5,250)	$ 942

[1] The Firm adopted the Investments - Tax Credit Structures accounting standard update on January 1, 2024. Refer to Note 2 for further information.

[2] See Note 16 for information regarding dividends per share for each class of stock.