Earnings (Loss) Per Common Share Or Unit (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share Diluted [Line Items]
Net income (loss)	$ 643	$ (11)	$ (741)
Less: Net (income) loss attributable to non-controlling interests	(10)	0	9
NET INCOME (LOSS) ATTRIBUTABLE TO HOST HOTELS & RESORTS, INC.	$ 633	$ (11)	$ (732)
Basic weighted average shares outstanding	714.7	710.3	705.9
Assuming distribution of common shares granted under the comprehensive stock plans, less shares assumed purchased at market	2.8
Diluted weighted average shares/units outstanding	717.5	710.3	705.9
Basic earnings (loss) per common share	$ 0.89	$ (0.02)	$ (1.04)
Diluted earnings (loss) per common share	$ 0.88	$ (0.02)	$ (1.04)
HOST HOTELS & RESORTS L.P.
Earnings Per Share Diluted [Line Items]
Net income (loss)	$ 643	$ (11)	$ (741)
Less: Net (income) loss attributable to non-controlling interests	(1)	(1)	1
NET INCOME (LOSS) ATTRIBUTABLE TO HOST HOTELS & RESORTS, INC.	$ 642	$ (12)	$ (740)
Basic weighted average shares outstanding	709.7	702.5	698.4
Assuming distribution of common shares granted under the comprehensive stock plans, less shares assumed purchased at market	2.7
Diluted weighted average shares/units outstanding	712.4	702.5	698.4
Basic earnings (loss) per common share	$ 0.91	$ (0.02)	$ (1.06)
Diluted earnings (loss) per common share	$ 0.90	$ (0.02)	$ (1.06)