Condensed Consolidated Statements Of Financial Condition (USD $) In Millions, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Assets
Cash and due from banks ($511 and $297 at December 31, 2011 and December 31, 2010, respectively, related to consolidated variable interest entities generally not available to the Company)	$ 13,165		$ 7,341
Interest bearing deposits with banks	34,147		40,274
Cash deposited with clearing organizations or segregated under federal and other regulations or requirements	29,454		19,180
Financial instruments owned, at fair value (approximately $140,749 and $129,969 were pledged to various parties at December 31, 2011 and December 31, 2010, respectively):
U.S. government and agency securities	63,449		48,446
Other sovereign government obligations	29,059		33,908
Corporate and other debt ($3,007 and $3,816 at December 31, 2011 and December 31, 2010, respectively, related to consolidated variable interest entities, generally not available to the Company)	68,923		88,154
Corporate equities ($0 and $625 at December 31, 2011 and December 31, 2010, respectively, related to consolidated variable interest entities, generally not available to the Company)	47,966		68,416	[1]
Derivative and other contracts	48,064		51,292
Investments ($1,666 and $1,873 at December 31, 2011 and December 31, 2010, respectively, related to consolidated variable interest entities, generally not available to the Company)	8,195		9,752
Physical commodities	9,697		6,778
Total financial instruments owned, at fair value	275,353		306,746
Securities available for sale, at fair value	30,495		29,649
Securities received as collateral, at fair value	11,651		16,537
Federal funds sold and securities purchased under agreements to resell (includes $112 and $0 at fair value at December 31, 2011 and December 31, 2010, respectively)	130,155		148,253
Securities borrowed	127,074		138,730
Receivables:
Customers	33,977		35,258
Brokers, dealers and clearing organizations	5,248		9,102
Fees, interest and other	9,444		9,790
Loans (net of allowances of $17 and $82 at December 31, 2011 and December 31, 2010, respectively)	15,369		10,576
Other investments	4,832		5,412
Premises, equipment and software costs (net of accumulated depreciation of $4,852 and $4,476 at December 31, 2011 and December 31, 2010, respectively) ($234 and $321 at December 31, 2011 and December 31, 2010, respectively, related to consolidated variable interest entities, generally not available to the Company)	6,457		6,154
Goodwill	6,686	[2]	6,739	[2]
Intangible assets (net of accumulated amortization of $910 and $605 at December 31, 2011 and December 31, 2010, respectively) (includes $133 and $157 at fair value at December 31, 2011 and December 31, 2010, respectively)	4,285		4,667
Other assets ($446 and $118 at December 31, 2011 and December 31, 2010, respectively, related to consolidated variable interest entities, generally not available to the Company)	12,106		13,290
Total assets	749,898	[3]	807,698	[3]
Liabilities and Equity
Deposits (includes $2,101 and $3,027 at fair value at December 31, 2011 and December 31, 2010, respectively)	65,662	[4]	63,812	[4]
Commercial paper and other short-term borrowings (includes $1,339 and $1,799 at fair value at December 31, 2011 and December 31, 2010, respectively)	2,843		3,256
Financial instruments sold, not yet purchased, at fair value:
U.S. government and agency securities	19,630		27,948
Other sovereign government obligations	17,141		22,250
Corporate and other debt	8,410		10,918
Corporate equities	24,497		19,838
Derivative and other contracts	46,453		47,802
Physical commodities	16		0
Total financial instruments sold, not yet purchased, at fair value	116,147		128,756
Obligation to return securities received as collateral, at fair value	15,394		21,163
Securities sold under agreements to repurchase (includes $348 and $849 at fair value at December 31, 2011 and December 31, 2010, respectively)	104,800		147,598
Securities loaned	30,462		29,094
Other secured financings (includes $14,594 and $8,490 at fair value at December 31, 2011 and December 31, 2010, respectively) ($2,316 and $2,656 at December 31, 2011 and December 31, 2010, respectively, related to consolidated variable interest entities and are non-recourse to the Company)	20,719	[5]	10,453	[5]
Payables:
Customers	117,241		123,249
Brokers, dealers and clearing organizations	4,082		3,363
Interest and dividends	2,292		2,572
Other liabilities and accrued expenses ($121 and $117 at December 31, 2011 and December 31, 2010, respectively, related to consolidated variable interest entities and are non-recourse to the Company)	15,944		16,518
Long-term borrowings (includes $39,663 and $42,709 at fair value at December 31, 2011 and December 31, 2010, respectively)	184,234	[6],[7],[8]	192,457	[6]
Total liabilities	679,820		742,291
Commitments and contingent liabilities (see Note 13)
Morgan Stanley shareholders' equity:
Preferred stock	1,508		9,597
Common stock, $0.01 par value; Shares authorized: 3,500,000,000 at December 31, 2011 and December 31, 2010; Shares issued: 1,989,377,171 at December 31, 2011 and 1,603,913,074 at December 31, 2010; Shares outstanding: 1,926,986,130 at December 31, 2011 and 1,512,022,095 at December 31, 2010	20		16
Paid-in capital	22,836		13,521
Retained earnings	40,341		38,603
Employee stock trust	3,166		3,465
Accumulated other comprehensive loss	(157)		(467)
Common stock held in treasury, at cost, $0.01 par value; 62,391,041 shares at December 31, 2011 and 91,890,979 shares at December 31, 2010	(2,499)		(4,059)
Common stock issued to employee trust	(3,166)		(3,465)
Total Morgan Stanley shareholders' equity	62,049		57,211
Noncontrolling interests	8,029		8,196
Total equity	70,078		65,407
Total liabilities and equity	$ 749,898		$ 807,698

[1] The Company holds or sells short for trading purposes equity securities issued by entities in diverse industries and of varying size.

[2] The amount of the Company’s goodwill before accumulated impairments of $700 million, which included $673 million related to the Institutional Securities business segment, and $27 million related to the Asset Management business segment was $7,386 million and $7,439 million at December 31, 2011 and December 31, 2010, respectively

[3] Corporate assets have been fully allocated to the Company’s business segments.

[4] Total deposits subject to Federal Deposit Insurance Corporation (the “FDIC”) at December 31, 2011 and December 31, 2010 were $52 billion and $48 billion, respectively.

[5] Amounts include $14,594 million at fair value at December 31, 2011 and $8,490 million at fair value at December 31, 2010.

[6] Amounts include long-term borrowings issued under the Temporary Liquidity Guarantee Program (“TLGP”).

[7] Amounts include an increase of approximately $6.3 billion at December 31, 2011, to the carrying amount of certain of the Company’s long-term borrowings associated with fair value hedges. The increase to the carrying value associated with fair value hedges by year due was approximately less than $0.1 billion due in 2012, $0.3 billion due in 2013, $0.5 billion due in 2014, $0.8 billion due in 2015, $0.7 billion due in 2016 and $4.0 billion due thereafter.

[8] Amounts include a decrease of approximately $2.5 billion at December 31, 2011 to the carrying amounts of certain of the Company’s long-term borrowings for which the fair value option was elected (see Note 4).