Summary of Unaudited Consolidated Pro Forma Results of Operations (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 17, 2011	Jun. 18, 2010	Jun. 17, 2011	Jun. 18, 2010
Business Acquisition, Pro Forma Information [Line Items]
Revenues	$ 1,311	$ 1,174	$ 2,255	$ 2,032
Income (loss) from continuing operations	69	22	17	(61)
Net income (loss)	66	22	13	(63)
HOST HOTELS & RESORTS, INC.
Business Acquisition, Pro Forma Information [Line Items]
Net income (loss) available to common shareholders	64	15	11	(72)
Basic earnings (loss) per common share:
Continuing operations	$ 0.10	$ 0.02	$ 0.03	$ (0.11)
Discontinued operations	$ (0.01)		$ (0.01)
Basic earnings (loss) per common share	$ 0.09	$ 0.02	$ 0.02	$ (0.11)
Diluted earnings (loss) per common share:
Continuing operations	$ 0.10	$ 0.02	$ 0.03	$ (0.11)
Discontinued operations	$ (0.01)		$ (0.01)
Diluted earnings (loss) per common share	$ 0.09	$ 0.02	$ 0.02	$ (0.11)
HOST HOTELS & RESORTS L.P.
Diluted earnings (loss) per common share:
Net income (loss) available to common unitholders	$ 65	$ 15	$ 11	$ (73)
Basic earnings (loss) per common unit:
Continuing operations	0.10	0.02	0.03	(0.11)
Discontinued operations	(0.01)		(0.01)
Basic earnings (loss) per common unit	0.09	0.02	0.02	(0.11)
Diluted earnings (loss) per common unit:
Continuing operations	0.10	0.02	0.03	(0.11)
Discontinued operations	(0.01)		(0.01)
Diluted earnings (loss) per common unit	0.09	0.02	0.02	(0.11)

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