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Period Type:	duration

- Details

Name:	ms_JointVenturesLineItems
Namespace Prefix:	ms_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The commitment to purchase additional percentage of interest in a joint venture.

No definition available.

Name:	ms_OtherCommitmentAdditionalPurchaseOfInterestInJointVenturePercent
Namespace Prefix:	ms_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Percentage of the equity interests owned by the parent in joint ventures included in the entity's consolidated financial statements.

No definition available.

Name:	ms_ParentOwnershipInterestInJointVentures
Namespace Prefix:	ms_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Purchase price for aggregate total additional interest in a joint venture.

No definition available.

Name:	ms_PurchasePriceForTotalAdditionalInterestInJointVenture
Namespace Prefix:	ms_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Increase in redeemable noncontrolling interest due to reclassification from nonredeemable noncontrolling interest.

No definition available.

Name:	ms_RedeemableNoncontrollingInterestReclassificationFromNonredeemableNoncontrollingInterest
Namespace Prefix:	ms_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of deposits transferred from joint venture partners.

No definition available.

Name:	ms_TransferOfDepositsFromJointVenturePartners
Namespace Prefix:	ms_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the purchase by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph A7

-Appendix A

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 55

-Paragraph 4M

-URI http://asc.fasb.org/extlink&oid=6922042&loc=SL4591554-111686

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 38

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

No definition available.