Interest Rate Swap Derivatives Designated as Cash Flow Hedges (Detail) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended	3 Months Ended				9 Months Ended						3 Months Ended				9 Months Ended
	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2014 Cash Flow Hedging Interest Rate Swap Swap Entered In Connection With Mortgage Loan On Hilton Melbourne South Wharf USD ($)		Sep. 30, 2013 Cash Flow Hedging Interest Rate Swap Swap Entered In Connection With Mortgage Loan On Hilton Melbourne South Wharf USD ($)		Sep. 30, 2014 Cash Flow Hedging Interest Rate Swap Swap Entered In Connection With Mortgage Loan On Hilton Melbourne South Wharf USD ($)		Sep. 30, 2013 Cash Flow Hedging Interest Rate Swap Swap Entered In Connection With Mortgage Loan On Hilton Melbourne South Wharf USD ($)		Sep. 30, 2014 Cash Flow Hedging Interest Rate Swap Swap Entered In Connection With Mortgage Loan On Hilton Melbourne South Wharf AUD		Sep. 30, 2014 Cash Flow Hedging Interest Rate Swap Swap Entered In Connection With Seven Properties New Zealand USD ($)		Sep. 30, 2013 Cash Flow Hedging Interest Rate Swap Swap Entered In Connection With Seven Properties New Zealand USD ($)		Sep. 30, 2014 Cash Flow Hedging Interest Rate Swap Swap Entered In Connection With Seven Properties New Zealand USD ($)		Sep. 30, 2013 Cash Flow Hedging Interest Rate Swap Swap Entered In Connection With Seven Properties New Zealand USD ($)		Sep. 30, 2014 Cash Flow Hedging Interest Rate Swap Swap Entered In Connection With Seven Properties New Zealand NZD
Derivative [Line Items]
Transaction Date								November 2011	[1]									February 2011	[2]
Notional Amount												62	[1]									79	[2]
Maturity Date								2016-11	[1]									2016-02	[2]
Swapped Index								Reuters BBSY	[1]									NZ$ Bank Bill	[2]
All-in-Rate												6.70%	[1]									7.15%	[2]
Change in fair value of derivative instruments	$ 12	$ (5)	$ 13	$ 0	[1]	$ 0	[1]	$ 0	[1]	$ 1	[1]			$ 0	[2]	$ 0	[2]	$ 0	[2]	$ 1	[2]

[1] The swap was entered into in connection with the A$86 million ($75 million) mortgage loan on the Hilton Melbourne South Wharf.

[2] The swap was entered into in connection with the NZ$105 million ($82 million) mortgage loan on seven properties in New Zealand.