Summary of Unaudited Consolidated Pro Forma Results of Operations (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 09, 2011	Sep. 10, 2010	Sep. 09, 2011	Sep. 10, 2010
Business Acquisition, Pro Forma Information [Line Items]
Revenues	$ 1,142	$ 1,108	$ 3,398	$ 3,191
Loss from continuing operations	(32)	(51)	(14)	(120)
Net loss	(32)	(50)	(18)	(122)
HOST HOTELS & RESORTS, INC.
Business Acquisition, Pro Forma Information [Line Items]
Net loss available to common shareholders	(30)	(47)	(18)	(128)
Basic loss per common share:
Continuing operations	$ (0.04)	$ (0.07)	$ (0.02)	$ (0.20)
Discontinued operations			$ (0.01)
Basic loss per common share	$ (0.04)	$ (0.07)	$ (0.03)	$ (0.20)
Diluted loss per common share:
Continuing operations	$ (0.04)	$ (0.07)	$ (0.02)	$ (0.20)
Discontinued operations			$ (0.01)
Diluted loss per common share	$ (0.04)	$ (0.07)	$ (0.03)	$ (0.20)
HOST HOTELS & RESORTS L.P.
Diluted loss per common share:
Net loss available to common unitholders	$ (31)	$ (48)	$ (18)	$ (130)
Basic loss per common unit:
Continuing operations	(0.04)	(0.07)	(0.02)	(0.20)
Discontinued operations			(0.01)
Basic loss per common unit	(0.04)	(0.07)	(0.03)	(0.20)
Diluted loss per common unit:
Continuing operations	(0.04)	(0.07)	(0.02)	(0.20)
Discontinued operations			(0.01)
Diluted loss per common unit	(0.04)	(0.07)	(0.03)	(0.20)

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