Mortgage Debt Issuances and Repayments (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Hyatt Regency Reston | Issuance of Debt
Debt Instrument [Line Items]
Rate	3.30%	[1]
Maturity date	Jul. 01, 2016	[1]
Issuance amount	$ 100	[1]
JW Marriott Washington, D.C. | Repayment of Debt
Debt Instrument [Line Items]
Rate	7.50%	[2]
Maturity date	Apr. 02, 2013	[2]
Repayment amount	(113)	[2]
Hilton Melbourne South Wharf | Issuance of Debt
Debt Instrument [Line Items]
Rate	6.40%	[3]
Maturity date	Nov. 23, 2016	[3]
Issuance amount	79	[3]
New Zealand Hotel Portfolio | Issuance of Debt
Debt Instrument [Line Items]
Rate	6.60%	[4]
Maturity date	Feb. 18, 2016	[4]
Issuance amount	80	[4]
Le Meridien Piccadilly | Repayment of Debt
Debt Instrument [Line Items]
Rate	1.99%	[5]
Maturity date	Jan. 20, 2012	[5]
Repayment amount	(52)	[5]
Canada | Repayment of Debt
Debt Instrument [Line Items]
Rate	5.20%
Maturity date	Mar. 01, 2011
Repayment amount	$ (132)

[1] The floating interest rate is equal to 1-month LIBOR plus 310 basis points. The rate shown reflects the rate in effect at December 31, 2012. We have the option to extend the maturity for one year, subject to certain conditions.

[2] We prepaid the mortgage including an exit fee of $1 million.

[3] The floating interest rate is equal to the 3-month BBSY plus 230 basis points. In addition, we entered into separate swap agreements that fix 75% of the loan at an all-in rate of 6.7% and cap the remaining 25% at an all-in interest rate of 9.9%. The rate shown reflects the rate in effect at December 31, 2012.

[4] The floating interest rate is equal to the 3-month New Zealand Bank Bill Rate plus 120 basis points plus an additional commitment fee of 120 basis points per annum. In addition, we entered into a swap agreement that fixes 75% of the loan at an all-in rate of 7.15%. The rate shown reflects the rate in effect at December 31, 2012.

[5] In connection with the transfer of Le Méridien Piccadilly to the Euro JV, we transferred the associated mortgage. This floating rate mortgage is based on LIBOR plus 118 basis points and reflects the rate in effect at the time of transfer. The mortgage loan had been assumed at acquisition of the property in June 2010.