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. 30, 2013	Jun. 15, 2012	Jun. 30, 2013	Jun. 15, 2012
Business Acquisition Pro Forma Information [Line Items]
Revenues	$ 1,424	$ 1,329	$ 2,673	$ 2,274
Income from continuing operations	120	79	156	23
Net income	122	82	183	81
HOST HOTELS & RESORTS, INC.
Business Acquisition Pro Forma Information [Line Items]
Net income attributable to Host Inc.	120	81	177	78
Basic earnings per common share:
Continuing operations	$ 0.16	$ 0.11	$ 0.20	$ 0.03
Discontinued operations			$ 0.04	$ 0.08
Basic earnings per common share	$ 0.16	$ 0.11	$ 0.24	$ 0.11
Diluted earnings per common share:
Continuing operations	$ 0.16	$ 0.11	$ 0.20	$ 0.03
Discontinued operations			$ 0.04	$ 0.08
Diluted earnings per common share	$ 0.16	$ 0.11	$ 0.24	$ 0.11
HOST HOTELS & RESORTS L.P.
Business Acquisition Pro Forma Information [Line Items]
Net income attributable to Host Inc.	$ 121	$ 82	$ 179	$ 79
Basic earnings per common unit:
Continuing operations	0.16	0.10	0.20	0.03
Discontinued operations		0.01	0.04	0.08
Basic earnings per common unit	0.16	0.11	0.24	0.11
Diluted earnings per common unit:
Continuing operations	0.16	0.10	0.20	0.03
Discontinued operations		0.01	0.04	0.08
Diluted earnings per common unit	0.16	0.11	0.24	0.11

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