Equity of Host Inc. and Capital of Host L.P. - Additional Information (Detail) $ / shares in Units, shares in Thousands		6 Months Ended
	Jun. 11, 2015 $ / shares	Jun. 30, 2015 USD ($) $ / shares shares	Dec. 31, 2014
HOST HOTELS & RESORTS, INC.
Stockholders Equity Note [Line Items]
Percentage of the common OP Units		99.00%
Dividend declaration date		Jun. 11, 2015
Dividend per share, declared | $ / shares	$ 0.20
Dividend payable date		Jul. 15, 2015
Dividend record date		Jun. 30, 2015
Common stock repurchase, shares | shares		6,550
Common stock repurchase, average price per share | $ / shares		$ 20.07
Common stock repurchase, value		$ 131,000,000
Remaining capacity of stock repurchase		369,000,000
HOST HOTELS & RESORTS, INC. | Maximum
Stockholders Equity Note [Line Items]
Common stock repurchase, authorized amount		$ 500,000,000
HOST HOTELS & RESORTS L.P.
Stockholders Equity Note [Line Items]
Shares issuable upon conversion of one OP unit		1.021494	1.021494
Common OP units, distribution paid | $ / shares		$ 0.2042988