Interest Rate Swap Derivatives Designated as Cash Flow Hedges (Detail) - Cash Flow Hedging - Interest rate swap derivatives - Swap Entered In Connection With Mortgage Loan On Hilton Melbourne South Wharf - Australia	6 Months Ended
	Jun. 30, 2016 AUD	[1]
Derivative [Line Items]
Transaction Date	2011-11
Notional amount	AUD 62,000,000
Maturity Date	2016-11
Swapped Index	Reuters BBSY
All-in-Rate	6.70%

[1] The swap was entered into in connection with the A$86 million ($64 million) mortgage loan on the Hilton Melbourne South Wharf.