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 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(24))
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(22))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: 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

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

Summary of Significant Accounting Policies - Noncontrolling Interests and Segment Reporting (Details) $ in Millions	9 Months Ended
	Sep. 30, 2016 item	Dec. 31, 2015	Sep. 30, 2015 USD ($)
Segment Reporting
Number of operating segments \| item	1
Hilton San Diego Bayfront
Property, Plant and Equipment
Noncontrolling interest percentage in Hilton San Diego Bayfront	25.00%	25.00%
Doubletree Guest Suites Times Square
Property, Plant and Equipment
Preferred equity interest in Doubletree Guest Suites Times Square captive REIT \| $			$ 0.1