Expected Franchise Fees Additional Annual Fee

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Expected Franchise Fees Percentage Of Developer Contract Sales

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Total cash distribution expected prior to completion of the planned Timeshare segment spin-off.

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The amount of cash tax benefits expected to be realized as a result of the Timeshare segment spin-off.

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The amount of cash costs expected to be incurred, some of which may be capitalizable, for the planned Timeshare segment spin-off.

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Segment Reporting Disclosure [Line Items]

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The amount of cash tax benefits already realized as a result of the planned Timeshare segment spin-off.

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Spin Off Plan Description

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Spin Off Transaction Description

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

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Planned Spin-off - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended									3 Months Ended
	Sep. 09, 2011	Sep. 09, 2011	Sep. 09, 2011 Warehouse Facility	Sep. 09, 2011 Preferred Stock Sale	Sep. 09, 2011 Lower Limit Within Four Years From Balance Sheet Date	Sep. 09, 2011 Upper Limit Within Four Years From Balance Sheet Date	Sep. 09, 2011 Lower Limit Current Year	Sep. 09, 2011 Upper Limit Current Year	Sep. 09, 2011 Lower Limit One Year from Balance Sheet Date	Sep. 09, 2011 Upper Limit One Year from Balance Sheet Date	Mar. 25, 2011 Timeshare Segment
Segment Reporting Disclosure [Line Items]
Planned spin-off											we expect to spin-off our timeshare operations and timeshare development business as a new independent company through a special tax-free dividend to our shareholders in late 2011
Expected franchise fees											We expect to receive franchise fees totaling approximately two percent of developer contract sales plus $50 million annually for the new timeshare company's use of the Marriott timeshare and Ritz-Carlton fractional brands
Expected franchise fees, percentage of developer contract sales											2.00%
Expected franchise fees, annual fee for use of Marriott timeshare and Ritz-Carlton fractional brands											$ 50
Expected spin-off cash tax benefits					325	350	70	80	120	130
Spin-off cash tax benefits realized		55
Spin-off transaction expenses recognized	8	13
Expected spin-off cash transaction costs							40	50
Expected spin-off cash distribution		$ 150	$ 110	$ 40