Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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The charge against earnings in the period to reduce the carrying amount of real property to fair value.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Carrying amount as of the balance sheet date of parcels of land held for sale, and on which the entity has no intention or no further intention to perform construction activities.

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The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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Cash received for the sale of real estate that is not part of an investing activity during the current period.

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Number Of Properties Assessed For Future Development

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Number Of Properties Deemed No Future Development

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Number of Properties With Construction In Process Write-Offs

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Asset Impairments and Other Charges Asset Impairments and Other Charges Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended		7 Months Ended
	May 31, 2017 location	Jun. 30, 2017 USD ($) location	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2017 USD ($) location
Number of properties assessed for future development \| location	19
Number of properties deemed to have no future development \| location	17
Number of properties deemed impaired \| location	16
Total non-cash impairment charges		$ 135	$ 0	$ 140	$ 0
Number of properties with construction in process write-offs \| location		6
Number of properties sold \| location	3
Cash consideration from sale of locations		$ 2
Gain (loss) on sale of locations		(7)
Land held-for-sale		19		19
Impairment charges related to abandonment of new product initiative		135
Vacation Ownership [Member]
Impairment charges related to abandonment of new product initiative				$ 5
Scenario, Forecast [Member]
Impairment of land held for vacation ownership interests						$ 13
Number of properties sold \| location						2
Cash consideration from sale of locations						$ 2
Land [Member] \| Vacation Ownership [Member]
Impairment of land held for vacation ownership interests		121
Construction in Progress [Member] \| Vacation Ownership [Member]
Impairment of land held for vacation ownership interests		$ 14