Equity Allocation between Controlling and Non-Controlling Interests (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Stockholders Equity Note [Line Items]
Beginning Balance			$ 7,262
Net income attributable to Host L.P.	144	19	478	194
Net income attributable to non-controlling interests	(1)	(1)	4	2
Net income	2		7	3
Other comprehensive loss	(35)	12	(23)	(12)
Ending Balance	7,350		7,350
HOST HOTELS & RESORTS, INC.
Stockholders Equity Note [Line Items]
Beginning Balance			7,262
Net income			482
Issuance of common stock			15
Dividends declared on common stock			(370)
Distributions to non-controlling interests			(5)
Other changes in ownership			(11)
Other comprehensive loss			(23)
Ending Balance	7,350		7,350
HOST HOTELS & RESORTS, INC. | Parent
Stockholders Equity Note [Line Items]
Beginning Balance			7,228
Net income attributable to Host L.P.			478
Issuance of common stock			15
Dividends declared on common stock			(370)
Other changes in ownership			(13)
Other comprehensive loss			(23)
Ending Balance	7,315		7,315
HOST HOTELS & RESORTS, INC. | Non-controlling Interests of Consolidated Partnerships
Stockholders Equity Note [Line Items]
Beginning Balance			34
Net income attributable to non-controlling interests			4
Distributions to non-controlling interests			(5)
Other changes in ownership			2
Ending Balance	35		35
HOST HOTELS & RESORTS, INC. | Redeemable non-controlling interests
Stockholders Equity Note [Line Items]
Beginning Balance			190
Net income			7
Distributions to non-controlling interests			(4)
Other changes in ownership			11
Ending Balance	$ 204		$ 204