CONSOLIDATED STATEMENTS OF CAPITAL - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
NET INCOME (LOSS)	$ (741)	$ 932	$ 1,151
Change in fair value of derivative instruments	(1)	(1)	1
Amounts reclassified from other comprehensive income (loss)	$ 1	$ 4	$ 13
Redemptions of limited partner interests for common stock (shares)	0.2	0.2	0.7
Redemptions of limited partner interests for common stock	$ 3	$ 2	$ 15
HOST HOTELS & RESORTS L.P.
Beginning Balance	7,325	7,566	7,002
NET INCOME (LOSS)	(733)	922	1,139
Other changes in ownership	22	(10)	21
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	(18)		(12)
Change in fair value of derivative instruments	(1)	(1)	1
Amounts reclassified from other comprehensive income (loss)	1	4	13
Common OP unit issuances			3
Units issued to Host Inc. for the comprehensive stock and employee stock purchase plans	15	10	11
Distributions on common OP units	(141)	(617)	(630)
Redemptions of limited partner interests for common stock	3	2	15
Distributions to non-controlling interests		(69)	(1)
Repurchase of common stock	(147)	(482)
Cumulative effect of accounting change			4
Ending Balance	$ 6,326	$ 7,325	$ 7,566
HOST HOTELS & RESORTS L.P. | Limited Partner
Beginning Balance, units	698.3	724.8	723.5
Beginning Balance	$ 7,374	$ 7,552	$ 7,032
NET INCOME (LOSS)	(732)	920	1,087
Other changes in ownership	$ 22	$ (11)	$ 30
Common OP unit issuances (units)			0.2
Common OP unit issuances			$ 3
Units issued to Host Inc. for the comprehensive stock and employee stock purchase plans (units)	0.7	0.5	0.4
Units issued to Host Inc. for the comprehensive stock and employee stock purchase plans	$ 15	$ 10	$ 11
Distributions on common OP units	$ (141)	$ (617)	$ (630)
Redemptions of limited partner interests for common stock (shares)	0.2	0.2	0.7
Redemptions of limited partner interests for common stock	$ 3	$ 2	$ 15
Repurchase of common stock (shares)	(8.7)	(27.2)
Repurchase of common stock	$ (147)	$ (482)
Cumulative effect of accounting change			$ 4
Ending Balance, units	690.5	698.3	724.8
Ending Balance	$ 6,394	$ 7,374	$ 7,552
HOST HOTELS & RESORTS L.P. | General Partner
Beginning Balance	1	1	1
Ending Balance	1	1	1
HOST HOTELS & RESORTS L.P. | Accumulated Other Comprehensive Income (Loss)
Beginning Balance	(56)	(59)	(60)
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates	(18)		(13)
Change in fair value of derivative instruments	(1)	(1)	1
Amounts reclassified from other comprehensive income (loss)	1	4	13
Ending Balance	(74)	(56)	(59)
HOST HOTELS & RESORTS L.P. | Non-controlling Interests of Consolidated Partnerships
Beginning Balance	6	72	29
NET INCOME (LOSS)	(1)	2	52
Other changes in ownership		1	(9)
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates			1
Distributions to non-controlling interests		(69)	1
Ending Balance	5	6	72
HOST HOTELS & RESORTS L.P. | Limited Partnership Interests Of Third Parties
Beginning Balance	142	128	167
NET INCOME (LOSS)	(8)	10	12
Other changes in ownership	(21)	13	(29)
Distributions on common OP units	(2)	(7)	(7)
Redemptions of limited partner interests for common stock	(3)	(2)	(15)
Ending Balance	$ 108	$ 142	$ 128