Equity of Host Inc. and Capital of Host L.P. - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended				1 Months Ended			1 Months Ended	12 Months Ended					1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Lower Limit	Mar. 31, 2013 Exchangeable 2004 senior debentures 3.25% due April 2024	Dec. 31, 2013 HOST HOTELS & RESORTS, INC.	Dec. 31, 2012 HOST HOTELS & RESORTS, INC.	Feb. 28, 2014 HOST HOTELS & RESORTS, INC. Subsequent Event	Dec. 31, 2013 HOST HOTELS & RESORTS, INC. Sales Agency Financing Agreement Twenty Twelve	Dec. 31, 2012 HOST HOTELS & RESORTS, INC. Sales Agency Financing Agreement Twenty Twelve	Dec. 31, 2013 Limited Partner	Dec. 31, 2013 HOST HOTELS & RESORTS L.P. AND SUBSIDIARIES	Dec. 31, 2012 HOST HOTELS & RESORTS L.P. AND SUBSIDIARIES	Mar. 31, 2013 HOST HOTELS & RESORTS L.P. AND SUBSIDIARIES Exchangeable 2004 senior debentures 3.25% due April 2024	Dec. 31, 2013 HOST HOTELS & RESORTS L.P. AND SUBSIDIARIES Sales Agency Financing Agreement Twenty Twelve	Dec. 31, 2012 HOST HOTELS & RESORTS L.P. AND SUBSIDIARIES Sales Agency Financing Agreement Twenty Twelve
Stockholders Equity Note [Line Items]
Common stock, shares authorized	1,050,000,000	1,050,000,000				1,050,000,000	1,050,000,000
Common stock, par value	$ 0.01	$ 0.01				$ 0.01	$ 0.01
Common stock, shares outstanding	754,800,000	724,600,000				754,800,000	724,600,000
Preferred stock, shares authorized						50,000,000
Preferred stock, no par value
Preferred stock, shares outstanding						0	0
Percentage of the common OP Units						98.70%					1.30%
Shares issuable upon conversion of one OP unit												1.021494	1.021494
Common OP units, outstanding						738,900,000	709,400,000					748,400,000	719,200,000
Common stock issuances									16,900,000	17,500,000
Average price per share for stock issued									$ 17.78	$ 15.67
Issuance of common stock	$ 303	$ 274	$ 323						$ 297	$ 271
Common OP units issued					11,500,000									11,500,000	16,500,000	17,100,000
Value of debentures converted to equity					$ 174
Debt converted into shares of Host Inc. common stock					11,700,000
Percentage of annual taxable income Host Inc is required to distribute				90.00%
Dividend policy	The amount of any future dividends will be determined by Host Inc.’s Board of Directors.
Dividend declaration date								Feb. 18, 2014
Dividend per share, declared	$ 0.46	$ 0.30	$ 0.14					$ 0.14
Dividend payable date								Apr. 15, 2014
Dividend record date								Mar. 31, 2014
Dividends taxable as ordinary income to stockholders	96.50%	100.00%
Dividends taxable as unrecaptured Section 1250 gain	3.50%