Document and Entity Information	3 Months Ended
	Mar. 23, 2012	Apr. 26, 2012
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 23, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Trading Symbol	HST
Entity Registrant Name	HOST HOTELS & RESORTS, INC.
Entity Central Index Key	0001070750
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		719,149,595