Segment Information - Summary of Segment Information (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Revenue		$ 352	$ 363
Adjusted EBITDA	[1]	85	127
Depreciation		(16)	(14)
Amortization of intangible assets		(8)	(7)
Stock-based compensation		(19)	(16)
Operating income		42	90
Other expense, net		(4)	(4)
Income before income taxes		38	86
Provision for income taxes		(11)	(23)
Net income		27	63
Operating Segments | Hotel Segment
Segment Reporting Information [Line Items]
Revenue		303	320
Adjusted EBITDA	[1]	106	132
Operating income		106	132
Operating Segments | Non-Hotel Segment
Segment Reporting Information [Line Items]
Revenue		49	43
Adjusted EBITDA	[1]	(21)	(5)
Operating income		(21)	(5)
Corporate and Unallocated
Segment Reporting Information [Line Items]
Depreciation		(16)	(14)
Amortization of intangible assets		(8)	(7)
Stock-based compensation		(19)	(16)
Operating income		$ (43)	$ (37)

[1] Includes allocated general and administrative expenses in our Hotel segment of $22 million and $20 million; and in our Non-Hotel segment of $9 million and $6 million for the three months ended March 31, 2016 and 2015, respectively.