Host L.P. Earnings (Loss) Per Common Unit (Detail) (HOST HOTELS & RESORTS L.P., USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 17, 2011 PartnershipUnit		Jun. 18, 2010 PartnershipUnit		Jun. 17, 2011 PartnershipUnit		Jun. 18, 2010 PartnershipUnit
HOST HOTELS & RESORTS L.P.
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	(1)		(1)		(2)		(2)
Distributions on preferred units			(2)				(4)
Issuance costs of redeemed preferred OP units			(4)	[1]			(4)	[1]
Earnings (loss) available to common unitholders	63		13		2		(74)
Diluted earnings (loss) available to common unitholders	$ 63		$ 13		$ 2		$ (74)
Basic weighted average units outstanding	682,000,000		649,500,000		677,800,000		647,500,000
Diluted weighted average units outstanding	683,300,000	[2]	651,100,000	[2]	679,200,000	[2]	647,500,000	[2]
Basic earnings (loss) per unit	0.09		0.02				(0.11)
Diluted earnings (loss) per unit	0.09		0.02				(0.11)

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

[2] For all periods presented, there were approximately 49 million potentially dilutive units related to our Exchangeable Senior Debentures, which were not included in the computation of diluted earnings per unit because to do so would have been anti-dilutive for the period.