Equity of Host Inc. and Capital of Host L.P. - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
HOST HOTELS & RESORTS, INC.
Stockholders Equity Note [Line Items]
Percentage of the common OP Units	99.00%
Dividend declaration date	Jul. 31, 2014
Dividend per share, declared	$ 0.20
Dividend payable date	Oct. 15, 2014
Dividend record date	Sep. 30, 2014
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	$ 0.2042988