Debt - Additional Information (Detail) In Millions, unless otherwise specified	1 Months Ended				1 Months Ended					3 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended	1 Months Ended	0 Months Ended	6 Months Ended
	Apr. 26, 2011 USD ($)	Jun. 17, 2011 USD ($)	Apr. 29, 2011 Australia Hilton Melbourne South Wharf USD ($)	Apr. 29, 2011 Australia Hilton Melbourne South Wharf AUD	Apr. 29, 2011 Australia Hilton Melbourne South Wharf Interest rate swap derivatives	May 31, 2011 Series W Senior Notes 5.875 Percent Due June 15, 2019 USD ($)	Jun. 17, 2011 Series W Senior Notes 5.875 Percent Due June 15, 2019 USD ($)	May 25, 2011 Series W Senior Notes 5.875 Percent Due June 15, 2019 USD ($)	May 11, 2011 Series W Senior Notes 5.875 Percent Due June 15, 2019 USD ($)	Jun. 17, 2011 Series K Senior Notes 7.125 Percent Due November 2013 USD ($)	Jun. 17, 2011 New Contract Exchangeable Senior Debentures 3.25 Percent USD ($)	May 27, 2011 Subsequent Event Exchangeable Senior Debentures 3.25 Percent USD ($)	Jun. 17, 2011 Subsequent Event Exchangeable Senior Debentures 3.25 Percent USD ($)	May 27, 2011 Exchangeable Senior Debentures 3.25 Percent USD ($)	May 12, 2011 Line of Credit USD ($)	Jun. 17, 2011 New Contract USD ($)	Jun. 17, 2011 New Contract European Joint Venture Le Meridien Piccadilly USD ($)	Jun. 17, 2011 New Contract European Joint Venture Le Meridien Piccadilly GBP (£)
Debt Disclosure [Line Items]
Face amount of debt								$ 75	$ 425
Redemption description														we gave notice of our intent to redeem $150 million of the outstanding $325 million 3.25% Exchangeable Senior Debentures.
Debt principal redeemed amount										250
Procced from issuance of note						489
Repurchase of debt, face amount											150			150
Prepayment premiums										3
Interest payment term						Semi-annually in arrears on June 15 and December 15, beginning December 15, 2011.
Outstanding amount of debt instrument														325
Proceed used to pay draw on credit facility							50
Debt interest rate									5.875%	7.125%				3.25%
Value of debentures converted to equity												134	134
Debt converted into shares of Host Inc. common stock												8.8	8.8
Debentures redeemed for cash												16	16
Mortgage debt assumed			86	80
Mortgage debt at fair value, premium			0.5
Swap's fair value, liability			1.9	1.8
Basis point over the fixed rate					3.25%
Fixed rate percentage of swap derivatives			7.52%	7.52%	7.52%
Swap agreement expiration date					Mar. 19, 2012
Debt expiration date					Feb. 28, 2012
Draw on credit facility	50
Repayment of credit facility															50		41	25
Decrease amount to outstanding debt from repayments																304
Total debt outstanding																5,600
Remaining available capacity under credit facility		$ 438														$ 479