Consolidated Statements of Changes in Total Equity (Unaudited) - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Employee Stock Trusts	Accumulated Other Comprehensive Income (Loss)	Common Stock Held in Treasury at Cost	Common Stock Issued to Employee Stock Trusts	Non-controlling Interests
Balance at at Dec. 31, 2016	$ 77,177	$ 7,520	$ 20	$ 23,271	$ 53,679	$ 2,851	$ (2,643)	$ (5,797)	$ (2,851)	$ 1,127
Cumulative adjustment for accounting changes	10			45	(35)
Net income applicable to Morgan Stanley	1,930				1,930
Net income applicable to noncontrolling interests	41									41
Dividends	(465)				(465)
Shares issued under employee plans and related tax effects	373			(430)		186		803	(186)
Repurchases of common stock and employee tax withholdings	(1,161)							(1,161)
Net change in Accumulated other comprehensive income (loss)	243						193			50
Issuance of preferred stock	994	1,000		(6)
Other net increases (decreases)	(58)									(58)
Balance at at Mar. 31, 2017	79,084	8,520	20	22,880	55,109	3,037	(2,450)	(6,155)	(3,037)	1,160
Balance at at Dec. 31, 2017	78,466	8,520	20	23,545	57,577	2,907	(3,060)	(9,211)	(2,907)	1,075
Cumulative adjustment for accounting changes	(131)				306		(437)
Net income applicable to Morgan Stanley	2,668				2,668
Net income applicable to noncontrolling interests	36									36
Dividends	(542)				(542)
Shares issued under employee plans	425			(285)				710
Repurchases of common stock and employee tax withholdings	(1,868)							(1,868)
Net change in Accumulated other comprehensive income (loss)	163						91			72
Other net increases (decreases)	272									272
Balance at at Mar. 31, 2018	$ 79,489	$ 8,520	$ 20	$ 23,260	$ 60,009	$ 2,907	$ (3,406)	$ (10,369)	$ (2,907)	$ 1,455