Document and Entity Information (USD $) In Billions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Feb. 26, 2013	Jun. 29, 2012
Document and Entity Information
Entity Registrant Name	HOSPITALITY PROPERTIES TRUST
Entity Central Index Key	0000945394
Document Type	10-K
Document Period End Date	Dec. 31, 2012
Amendment Flag	true
Amendment Description	Item 15 of the Annual Report is amended and being filed in its entirety solely to include in the notes to our consolidated financial statements, summary audited financial information for TA for the fiscal years ended December 31, 2012, 2011 and 2010, as reported by TA in its Annual Report on Form 10-K filed with the SEC for the fiscal year ended December 31, 2012.
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 3.0
Entity Common Stock, Shares Outstanding		123,637,424
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY