Fair Value of Financial Assets and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Fair Value, Measurements, Recurring | Interest Rate Swap
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets			$ 1	[1]
Derivative liabilities	(3)	[1]	(3)	[1]
Fair Value, Measurements, Recurring | Forward Currency Sale Contracts
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets			3	[1]
Derivative liabilities	(5)	[1]	(6)	[1]
Fair Value, Measurements, Nonrecurring | Impaired Hotel Properties Held And Used
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Impaired hotel properties held and used			9	[2]
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Interest Rate Swap
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets			1	[1]
Derivative liabilities	(3)	[1]	(3)	[1]
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring | Forward Currency Sale Contracts
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Derivative assets			3	[1]
Derivative liabilities	(5)	[1]	(6)	[1]
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring | Impaired Hotel Properties Held And Used
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Impaired hotel properties held and used			$ 9	[2]

[1] These derivative contracts have been designated as hedging instruments.

[2] The fair value measurements are as of the measurement date of the impairment and may not reflect subsequent book values.