Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Doubletree Guest Suites Times Square
Non-Controlling Interests
Preferred equity interest in Doubletree Guest Suites Times Square captive REIT	$ 0.1	$ 0.1
Hilton San Diego Bayfront
Non-Controlling Interests
Minority interest percentage in Hilton San Diego Bayfront	25.00%	25.00%

The amount of noncontrolling interest in subsidiary represented by preferred securities issued by the subsidiary.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.31)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 27

-Article 5

Name:	us-gaap_MinorityInterestAmountRepresentedByPreferredStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant