Capital Allocation between Controlling and Non-Controlling Interests (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Limited Partners Capital Account [Line Items]
Beginning Balance			$ 7,033
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY	$ 210	$ 347	368	$ 529
Other comprehensive income	1	23	6	36
Ending Balance	7,141		7,141
HOST HOTELS & RESORTS L.P.
Limited Partners Capital Account [Line Items]
Beginning Balance			7,033
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY	212	352	372	536
Net income			369
Issuance of common stock for comprehensive stock plans			14
Distributions declared on common OP units			(295)
Changes in ownership and other			14
Other comprehensive income	1	$ 23	6	$ 36
Ending Balance	7,141		7,141
HOST HOTELS & RESORTS L.P. | Parent
Limited Partners Capital Account [Line Items]
Beginning Balance			6,994
NET INCOME ATTRIBUTABLE TO REPORTING ENTITY			368
Issuance of common stock for comprehensive stock plans			14
Distributions declared on common OP units			(295)
Changes in ownership and other			15
Other comprehensive income			5
Ending Balance	7,101		7,101
HOST HOTELS & RESORTS L.P. | Non-controlling Interests
Limited Partners Capital Account [Line Items]
Beginning Balance			39
Net income attributable to non-controlling interests			1
Changes in ownership and other			(1)
Other comprehensive income			1
Ending Balance	40		40
HOST HOTELS & RESORTS L.P. | Limited Partnership Interests Of Third Parties
Limited Partners Capital Account [Line Items]
Beginning Balance			165
Net income			4
Distributions declared on common OP units			(3)
Changes in ownership and other			(10)
Ending Balance	$ 156		$ 156