Combined Summarized Balance Sheet Information (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Property and equipment, net	$ 1,650	$ 2,369
Timeshare inventory	157	178
Other assets	642	424
Total assets	2,449	2,971
Debt	1,120	1,577
Other liabilities	301	163
Equity	1,028	1,231
Total liabilities and equity	$ 2,449	$ 2,971