Host Inc. Earnings (Loss) Per Common Share (Detail) (HOST HOTELS & RESORTS, INC., USD $) In Millions, except Per Share data	3 Months Ended				6 Months Ended
	Jun. 17, 2011		Jun. 18, 2010		Jun. 17, 2011		Jun. 18, 2010
HOST HOTELS & RESORTS, INC.
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Net income (loss)	$ 64		$ 20		$ 4		$ (64)
Less: Net income attributable to non- controlling interests	(2)		(1)		(2)		(1)
Dividends on preferred stock			(2)				(4)
Issuance costs of redeemed preferred stock			(4)	[1]			(4)	[1]
Earnings (loss) available to common stockholders	62		13		2		(73)
Diluted earnings (loss) available to common stockholders	$ 62		$ 13		$ 2		$ (73)
Basic weighted average shares outstanding	685.7		652.5		681.5		650.3
Diluted weighted average shares outstanding	687.1	[2]	654.1	[2]	683.0	[2]	650.3	[2]
Basic earnings (loss) per share	$ 0.09		$ 0.02				$ (0.11)
Diluted earnings (loss) per share	$ 0.09		$ 0.02				$ (0.11)

[1] Represents the original issuance costs associated with the Class E preferred stock, which were redeemed during the second quarter 2010.

[2] For all periods presented, there were approximately 50 million potentially dilutive shares related to our Exchangeable Senior Debentures, which were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the period.