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	[1]	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		$ 4,881	$ (6,253)	$ (26,577)	$ (4,881)	$ 1,090
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based award activity				(94)					377		1,402	(377)
Net income applicable to Morgan Stanley	$ 5,162				5,162
Preferred stock dividends	(277)				(277)	[2]
Common stock dividends	(2,597)				(2,597)	[2]
Other net increases (decreases)					1								(93)
Net change in Accumulated other comprehensive income (loss)	(161)									(47)			(114)
Repurchases of common stock and employee tax withholdings											(3,305)
Net income applicable to noncontrolling interests	92												92
Ending balance at Jun. 30, 2023	101,361	8,750	20	29,245	97,151				5,258	(6,300)	(28,480)	(5,258)	975
Beginning and ending balance at Mar. 31, 2023		8,750	20	28,856	96,392		0		5,343	(5,711)	(27,481)	(5,343)	1,128
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based award activity				389					(85)		98	85
Net income applicable to Morgan Stanley	2,182				2,182
Preferred stock dividends	(133)				(133)	[2]
Common stock dividends	(1,292)				(1,292)	[2]
Other net increases (decreases)					2								(97)
Net change in Accumulated other comprehensive income (loss)	(684)									(589)			(95)
Repurchases of common stock and employee tax withholdings											(1,097)
Net income applicable to noncontrolling interests	39												39
Ending balance at Jun. 30, 2023	101,361	8,750	20	29,245	97,151				5,258	(6,300)	(28,480)	(5,258)	975
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				(373)					(204)		1,555	204
Net income applicable to Morgan Stanley	6,488				6,488
Preferred stock dividends	(280)				(280)	[2]
Common stock dividends	(2,767)				(2,767)	[2]
Other net increases (decreases)					(3)								(41)
Net change in Accumulated other comprehensive income (loss)	(441)									(339)			(102)
Repurchases of common stock and employee tax withholdings											(2,545)
Net income applicable to noncontrolling interests	91												91
Ending balance at Jun. 30, 2024	101,606	8,750	20	29,459	101,374				5,110	(6,760)	(32,129)	(5,110)	892
Beginning and ending balance at Mar. 31, 2024		8,750	20	29,046	99,811		$ 0		5,250	(7,057)	(31,372)	(5,250)	942
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based award activity				413					(140)		70	140
Net income applicable to Morgan Stanley	3,076				3,076
Preferred stock dividends	(134)				(134)	[2]
Common stock dividends	(1,377)				(1,377)	[2]
Other net increases (decreases)					(2)								(45)
Net change in Accumulated other comprehensive income (loss)	251									297			(46)
Repurchases of common stock and employee tax withholdings											(827)
Net income applicable to noncontrolling interests	41												41
Ending balance at Jun. 30, 2024	$ 101,606	$ 8,750	$ 20	$ 29,459	$ 101,374				$ 5,110	$ (6,760)	$ (32,129)	$ (5,110)	$ 892

[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.