Host L.P. Earnings (Loss) Per Common Unit (Detail) (HOST HOTELS & RESORTS L.P., USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 09, 2011 PartnershipUnit		Sep. 10, 2010 PartnershipUnit		Sep. 09, 2011 PartnershipUnit		Sep. 10, 2010 PartnershipUnit
HOST HOTELS & RESORTS L.P.
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Net loss	$ (35)		$ (61)		$ (32)		$ (126)
Less: Net loss attributable to non-controlling interests	1		2
Distributions on preferred units							(4)
Issuance costs of redeemed preferred OP units							(4)	[1]
NET LOSS AVAILABLE TO COMMON UNITHOLDERS	(34)		(59)		(32)		(134)
Diluted loss available to common unitholders	$ (34)		$ (59)		$ (32)		$ (134)
Basic weighted average units outstanding	697.9		651.4		684.5		648.8
Diluted weighted average units outstanding	697.9	[2]	651.4	[2]	684.5	[2]	648.8	[2]
Basic loss per unit	(0.05)		(0.09)		(0.05)		(0.21)
Diluted loss per unit	(0.05)		(0.09)		(0.05)		(0.21)

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

[2] There were approximately 41 million and 47 million for the quarter and year-to-date periods ended September 9, 2011, respectively, and 51 million for the quarter and year-to-date periods ended September 10, 2010, potentially dilutive units related to our Exchangeable Senior Debentures and units that would be distributable to Host Inc. for shares granted under comprehensive stock plans, which were not included in the computation of diluted earnings per unit because to do so would have been anti-dilutive for the period.