Quarterly Financial Data (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Information [Line Items]
Revenues																	$ 5,166	$ 5,059	$ 4,714
Operating profit																	512	362	309
Income (loss) from continuing operations																	210	(8)	(27)
Income (loss) from discontinued operations, net of tax																	115	71	11
Net income (loss)																	325	63	(16)
Net income (loss) attributable to Host Inc.																	317	61	(15)
Basic earnings (loss) per common share:
Continuing operations																	$ 0.27	$ (0.01)	$ (0.04)
Discontinued operations																	$ 0.16	$ 0.09	$ 0.02
Basic earnings (loss) per common share																	$ 0.43	$ 0.08	$ (0.02)
Diluted earnings (loss) per common share:
Continuing operations																	$ 0.27	$ (0.01)	$ (0.04)
Discontinued operations																	$ 0.15	$ 0.09	$ 0.02
Diluted earnings (loss) per common share																	$ 0.42	$ 0.08	$ (0.02)
Income from discontinued operations, net of tax																	115	71	11
NET INCOME (LOSS)																	325	63	(16)
HOST HOTELS & RESORTS, INC.
Quarterly Financial Information [Line Items]
Revenues	1,331		1,211		1,399		1,225		1,673		1,149		1,308		929
Operating profit	138		79		205		90		108		63		175		16
Income (loss) from continuing operations	59		1		116		34		5		(39)		79		(54)
Income (loss) from discontinued operations, net of tax	67		17		5		26		10		3		4		54
Net income (loss)	126		18		121		60		15		(36)		83
Net income (loss) attributable to Host Inc.	123		19		119		56		15		(34)		82		(2)		317	61	(15)
Basic earnings (loss) per common share:
Continuing operations	$ 0.07		$ 0.01		$ 0.16		$ 0.04		$ 0.01		$ (0.05)		$ 0.11		$ (0.08)
Discontinued operations	$ 0.09		$ 0.02				$ 0.04		$ 0.01						$ 0.08
Basic earnings (loss) per common share	$ 0.16		$ 0.03		$ 0.16		$ 0.08		$ 0.02		$ (0.05)		$ 0.11
Diluted earnings (loss) per common share:
Continuing operations	$ 0.07		$ 0.01		$ 0.16		$ 0.04		$ 0.01		$ (0.05)		$ 0.11		$ (0.08)
Discontinued operations	$ 0.09		$ 0.02				$ 0.04		$ 0.01						$ 0.08
Diluted earnings (loss) per common share	$ 0.16		$ 0.03		$ 0.16		$ 0.08		$ 0.02		$ (0.05)		$ 0.11
Income from discontinued operations, net of tax	67		17		5		26		10		3		4		54
NET INCOME (LOSS)	126		18		121		60		15		(36)		83
HOST HOTELS & RESORTS L.P. AND SUBSIDIARIES
Quarterly Financial Information [Line Items]
Revenues																	5,166	5,059	4,714
Operating profit																	512	362	309
Income (loss) from continuing operations																	210	(8)	(27)
Income (loss) from discontinued operations, net of tax																	115	71	11
Net income (loss)																	325	63	(16)
Net income (loss) attributable to Host Inc.	125	[1]	19	[1]	120	[1]	57	[1]	16	[1]	(35)	[1]	83	[1]	(2)	[1]	321	62	(15)
Basic earnings (loss) per common share:
Continuing operations	$ 0.08	[1]	$ 0.01	[1]	$ 0.15	[1]	$ 0.04	[1]	$ 0.01	[1]	$ (0.05)	[1]	$ 0.11	[1]	$ (0.08)	[1]	$ 0.28	$ (0.01)	$ (0.04)
Discontinued operations	$ 0.09	[1]	$ 0.02	[1]	$ 0.01	[1]	$ 0.04	[1]	$ 0.01	[1]			$ 0.01	[1]	$ 0.08	[1]	$ 0.15	$ 0.10	$ 0.02
Basic earnings (loss) per common share	$ 0.17	[1]	$ 0.03	[1]	$ 0.16	[1]	$ 0.08	[1]	$ 0.02	[1]	$ (0.05)	[1]	$ 0.12	[1]			$ 0.43	$ 0.09	$ (0.02)
Diluted earnings (loss) per common share:
Continuing operations	$ 0.08	[1]	$ 0.01	[1]	$ 0.15	[1]	$ 0.04	[1]	$ 0.01	[1]	$ (0.05)	[1]	$ 0.11	[1]	$ (0.08)	[1]	$ 0.28	$ (0.01)	$ (0.04)
Discontinued operations	$ 0.09	[1]	$ 0.02	[1]	$ 0.01	[1]	$ 0.04	[1]	$ 0.01	[1]			$ 0.01	[1]	$ 0.08	[1]	$ 0.15	$ 0.10	$ 0.02
Diluted earnings (loss) per common share	$ 0.17	[1]	$ 0.03	[1]	$ 0.16	[1]	$ 0.08	[1]	$ 0.02	[1]	$ (0.05)	[1]	$ 0.12	[1]			$ 0.43	$ 0.09	$ (0.02)
Income from discontinued operations, net of tax																	115	71	11
NET INCOME (LOSS)																	$ 325	$ 63	$ (16)

[1] Other income statement line items not presented for Host L.P. are equal to the amounts presented for Host Inc.