Assets and Liabilities Held for Sale - Additional Information (Detail) - France [Member] - Foreign Hotel [Member] - Disposal Group, Held for Sale, Not Discontinued Operations [Member] - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Long-term Assets Held for Sale [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Estimated goodwill expected to be allocated	$ 1	$ 1
Gain (loss) on asset dispositions and impairments, net [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Impairment charge	23
Realization of cumulative translation adjustment loss	$ 8