Face Value Of Preferred Stock Issued By Subsidiary

No definition available.

Name:	mar_FaceValueOfPreferredStockIssuedBySubsidiary
Namespace Prefix:	mar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Franchise Fees, Annual Fee

+ References

No definition available.

+ Details

Name:	mar_FranchiseFeesAnnualFee
Namespace Prefix:	mar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Franchise Fees, Percentage Of Developer Contract Sales

+ References

No definition available.

+ Details

Name:	mar_FranchiseFeesPercentageOfDeveloperContractSales
Namespace Prefix:	mar_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Franchise Fees, Percentage of Gross Resales

+ References

No definition available.

+ Details

Name:	mar_FranchiseFeesPercentageOfGrossResales
Namespace Prefix:	mar_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum borrowing capacity of line of credit facility for subsidiary, that remained with subsidiary after the spin-off.

+ References

No definition available.

+ Details

Name:	mar_LineOfCreditForSubsidiaryMaximumBorrowingCapacity
Namespace Prefix:	mar_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Proceeds From Sale of Stock in Subsidiary or Equity Method Investee, Net

+ References

No definition available.

+ Details

Name:	mar_ProceedsFromSaleOfStockInSubsidiaryOrEquityMethodInvesteeNet
Namespace Prefix:	mar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	mar_SegmentReportingDisclosureLineItems
Namespace Prefix:	mar_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Net cash distribution received prior to completion of the Timeshare segment spin-off.

+ References

No definition available.

+ Details

Name:	mar_SpinOffCashDistributionNet
Namespace Prefix:	mar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of spinnee shares received by shareholders of spinnor in spin-off transaction, used to determine how many spinnee shares were distributed.

+ References

No definition available.

+ Details

Name:	mar_SpinOffDistributionRatioSpinneeSharesReceived
Namespace Prefix:	mar_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares held by shareholders of the spinnor, used to determine how many spinnee shares were distributed.

+ References

No definition available.

+ Details

Name:	mar_SpinOffDistributionRatioSpinnorSharesHeld
Namespace Prefix:	mar_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Spin Off Entity Shares Beneficially Owned

+ References

No definition available.

+ Details

Name:	mar_SpinOffEntitySharesBeneficiallyOwned
Namespace Prefix:	mar_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Expenses recognized in the Income Statement for the spin-off of the Timeshare segment.

+ References

No definition available.

+ Details

Name:	mar_SpinOffTransactionRelatedExpensesRecognized
Namespace Prefix:	mar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The loss or gain included in earnings during the period resulting from the disposal of an asset through a means other than through sale, such as abandonment, spin-off, and expropriation.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 27, 28

-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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=6390789&loc=d3e2611-110228

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 40

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6390744&loc=d3e2212-110226

+ Details

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

- Definition

The change in equity as a result of a spin-off transaction (a regular or reverse spin-off) which is based on the recorded amounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 60

-Section 25

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6406278&loc=d3e26268-112671

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

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 02-11

-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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Spinoff

-URI http://asc.fasb.org/extlink&oid=6749415

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Reverse Spinoff

-URI http://asc.fasb.org/extlink&oid=6524171

+ Details

Name:	us-gaap_StockholdersEquityNoteSpinoffTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Spin-off - Additional Information (Detail) (USD $)	0 Months Ended	1 Months Ended		11 Months Ended	12 Months Ended		11 Months Ended		0 Months Ended
Spin-off - Additional Information (Detail) (USD $)	Oct. 26, 2011	Nov. 21, 2011	Dec. 30, 2011	Nov. 20, 2011	Dec. 30, 2011	Nov. 10, 2011	Nov. 20, 2011 Warehouse Facility	Sep. 09, 2011 Warehouse Facility	Oct. 28, 2011 Preferred Stock Sale
Segment Reporting Disclosure [Line Items]
Spin-off distribution ratio, spinnee shares received						1
Spin-off distribution ratio, spinnor shares held						10
Shares of MVW US Holdings, Inc. beneficially owned			0
Franchise fees, annual fee for use of Marriott timeshare and Ritz-Carlton fractional brands			$ 50,000,000		$ 50,000,000
Franchise fees, percentage of developer contract sales			2.00%		2.00%
Franchise fees, percentage of gross resales			1.00%		1.00%
Spin-off of MVW					1,162,000,000
Spin-off transaction expenses recognized				34,000,000
Spin-off cash distribution, net				160,000,000			122,000,000
Secured warehouse credit facility to be used on short-term financing								300,000,000
Redeemable Series A preferred stock issued to Marriott by MVW	40,000,000
Proceeds from sale of stock in MVW, net									38,000,000
Gain (loss) recognized as a result of spin-off		$ 0