Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Significant Accounting Policies [Line Items]
Licensing fees from MVW after spin-off	$ 59,000,000	$ 60,000,000	$ 61,000,000
Liability for guest loyalty program	$ 2,574,000,000	2,334,000,000
Reduction in estimate of breakage	10.00%
Increase in liability for guest loyalty program, contingent upon reduction in the estimate of breakage	$ 164,000,000
Gains (losses) from foreign currency transactions	6,000,000	16,000,000	5,000,000
Accounts receivable reserve	25,000,000	33,000,000
Goodwill impairment charge	$ 0	0	0
Discount rate	2.00%
Self-insurance reserves	$ 5,000,000	4,000,000
Deferred Profit Sharing
Significant Accounting Policies [Line Items]
Compensation costs from profit sharing	80,000,000	76,000,000	$ 75,000,000
New Accounting Pronouncement, Early Adoption, Effect
Significant Accounting Policies [Line Items]
Deferred tax assets, net, current	311,000,000
Deferred tax liabilities, net, current	$ 22,000,000
New Accounting Pronouncement, Early Adoption, Effect | Other Noncurrent Assets
Significant Accounting Policies [Line Items]
Long-term debt		10,000,000
New Accounting Pronouncement, Early Adoption, Effect | Long-Term Debt
Significant Accounting Policies [Line Items]
Long-term debt		$ (10,000,000)