Name:	ms_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesCurrentMaturities
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Data Type:	xbrli:monetaryItemType
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Amount of liabilities associated with financial assets accounted for as secured borrowings maturing after the fifth fiscal year following the latest fiscal year.

No definition available.

Name:	ms_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesMaturitiesRepaymentsOfPrincipalAfterYearFive
Namespace Prefix:	ms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of liabilities associated with financial assets accounted for as secured borrowings maturing in the next fiscal year following the latest fiscal year.

No definition available.

Name:	ms_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
Namespace Prefix:	ms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of liabilities associated with financial assets accounted for as secured borrowings maturing in the fifth fiscal year following the latest fiscal year.

No definition available.

Name:	ms_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesMaturitiesRepaymentsOfPrincipalInYearFive
Namespace Prefix:	ms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of liabilities associated with financial assets accounted for as secured borrowings maturing in the fourth fiscal year following the latest fiscal year.

No definition available.

Name:	ms_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesMaturitiesRepaymentsOfPrincipalInYearFour
Namespace Prefix:	ms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of liabilities associated with financial assets accounted for as secured borrowings maturing in the third fiscal year following the latest fiscal year.

No definition available.

Name:	ms_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesMaturitiesRepaymentsOfPrincipalInYearThree
Namespace Prefix:	ms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of liabilities associated with financial assets accounted for as secured borrowings maturing in the second fiscal year following the latest fiscal year.

No definition available.

Name:	ms_TransfersAccountedForAsSecuredBorrowingsAssociatedLiabilitiesMaturitiesRepaymentsOfPrincipalInYearTwo
Namespace Prefix:	ms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

Name:	us-gaap_DebtDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=64858031&loc=SL6224234-111729