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, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Business Acquisition, Pro Forma Information [Abstract]
Revenues	$ 1,431	$ 1,401	$ 2,740	$ 2,628
Income from continuing operations	159	117	346	151
Net income	159	122	346	182
HOST HOTELS & RESORTS, INC.
Business Acquisition, Pro Forma Information [Abstract]
Net income attributable to Host Inc.	155	120	336	176
Basic earnings per common share:
Continuing operations	$ 0.21	$ 0.15	$ 0.44	$ 0.20
Discontinued operations		$ 0.01		$ 0.04
Basic earnings per common share	$ 0.21	$ 0.16	$ 0.44	$ 0.24
Diluted earnings per common share:
Continuing operations	$ 0.21	$ 0.15	$ 0.44	$ 0.20
Discontinued operations		$ 0.01		$ 0.04
Diluted earnings per common share	$ 0.21	$ 0.16	$ 0.44	$ 0.24
HOST HOTELS & RESORTS L.P.
Business Acquisition, Pro Forma Information [Abstract]
Net income attributable to Host Inc.	$ 157	$ 121	$ 341	$ 178
Basic earnings per common unit:
Continuing operations	$ 0.21	$ 0.15	$ 0.46	$ 0.20
Discontinued operations		$ 0.01		$ 0.04
Basic earnings per common unit	$ 0.21	$ 0.16	$ 0.46	$ 0.24
Diluted earnings per common unit:
Continuing operations	$ 0.21	$ 0.15	$ 0.46	$ 0.20
Discontinued operations		$ 0.01		$ 0.04
Diluted earnings per common unit	$ 0.21	$ 0.16	$ 0.46	$ 0.24

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect per basic unit for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma income from discontinued operations per basic share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period attributable to the parent entity as if the business combination or combinations had been completed at the beginning of a period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

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