Goodwill and Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]
Finite-lived intangible assets amortization expense	$ 28	$ 25	$ 30
Management and franchise agreements [Member]
Goodwill [Line Items]
Finite-lived intangible assets amortization expense	$ 28	$ 24	$ 29