CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings / (Deficit)	Non-redeemable Non-controlling Interest of Other Consolidated Partnerships	Redeemable Non-controlling Interests of Host Hotels & Resorts, L.P.	Parent Company
Balance, shares at Dec. 31, 2017		739.1
Balance at Dec. 31, 2017		$ 7	$ 8,097	$ (60)	$ (1,071)	$ 29	$ 167	$ 7,002
NET INCOME (LOSS)	$ 1,151				1,087	52	12	1,139
Other changes in ownership			30			(9)	(29)	21
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates				(13)		1		(12)
Change in fair value of derivative instruments	1			1				1
Amounts reclassified from other comprehensive income (loss)	$ 13			13				13
Common stock issuances (shares)		0.2
Common stock issuances			3					3
Comprehensive stock and employee stock purchase plans (shares)		0.4
Comprehensive stock and employee stock purchase plans			11					11
Common stock dividends					(630)			(630)
Redemptions of limited partner interests for common stock (shares)	0.7	0.7
Redemptions of limited partner interests for common stock	$ 15		15				(15)	15
Distributions to non-controlling interests						(1)	(7)	(1)
Cumulative effect of accounting change					4			4
Balance, shares at Dec. 31, 2018		740.4
Balance at Dec. 31, 2018		$ 7	8,156	(59)	(610)	72	128	7,566
NET INCOME (LOSS)	932				920	2	10	922
Other changes in ownership			(11)			1	13	(10)
Change in fair value of derivative instruments	(1)			(1)				(1)
Amounts reclassified from other comprehensive income (loss)	$ 4			4				4
Comprehensive stock and employee stock purchase plans (shares)		0.6
Comprehensive stock and employee stock purchase plans			10					10
Common stock dividends					(617)			(617)
Redemptions of limited partner interests for common stock (shares)	0.2	0.2
Redemptions of limited partner interests for common stock	$ 2		2				(2)	2
Distributions to non-controlling interests						(69)	(7)	(69)
Repurchase of common stock (shares)		(27.8)
Repurchase of common stock			(482)					(482)
Balance, shares at Dec. 31, 2019	713.4	713.4
Balance at Dec. 31, 2019	$ 7,325	$ 7	7,675	(56)	(307)	6	142	7,325
NET INCOME (LOSS)	(741)				(732)	(1)	(8)	(733)
Other changes in ownership			22				(21)	22
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates				(18)				(18)
Change in fair value of derivative instruments	(1)			(1)				(1)
Amounts reclassified from other comprehensive income (loss)	$ 1			1				1
Comprehensive stock and employee stock purchase plans (shares)		0.7
Comprehensive stock and employee stock purchase plans			15					15
Common stock dividends					(141)			(141)
Redemptions of limited partner interests for common stock (shares)	0.2	0.2
Redemptions of limited partner interests for common stock	$ 3		3				(3)	3
Distributions to non-controlling interests							(2)
Repurchase of common stock (shares)		(8.9)
Repurchase of common stock			(147)					(147)
Balance, shares at Dec. 31, 2020	705.4	705.4
Balance at Dec. 31, 2020	$ 6,326	$ 7	$ 7,568	$ (74)	$ (1,180)	$ 5	$ 108	$ 6,326