Equity of Host Inc. and Capital of Host L.P. - Additional Information (Detail) $ / shares in Units, $ in Millions			3 Months Ended
	Apr. 15, 2024 $ / shares	Feb. 21, 2024 $ / shares	Mar. 31, 2024 USD ($) shares	Mar. 31, 2023 USD ($)	Dec. 31, 2023 shares
Stockholders Equity Note [Line Items]
Repurchase of common stock				$ 50
Amount available for repurchase			$ 792
Stock issuance remaining capacity			$ 600
Dividend declared (in dollars per share) | $ / shares		$ 0.20
Common units outstanding | shares			9,500,000		9,500,000
Share repurchase program, shares repurchased (in shares) | shares			0
Common Stock | Equity Distribution Program
Stockholders Equity Note [Line Items]
Shares issued (in shares) | shares			0
Subsequent Event
Stockholders Equity Note [Line Items]
Dividend paid in cash (in dollars per share) | $ / shares	$ 0.20
Host L.P.
Stockholders Equity Note [Line Items]
Percentage of the common OP units			99.00%
HOST HOTELS & RESORTS L.P.
Stockholders Equity Note [Line Items]
Shares issuable upon conversion of one common OP unit (in shares)			1.021494		1.021494
Repurchase of common stock				$ 50
HOST HOTELS & RESORTS L.P. | Subsequent Event
Stockholders Equity Note [Line Items]
Distribution per share (in dollars per share) | $ / shares	$ 0.2042988