Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

No definition available.

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Period Type:	duration

Summary of Significant Accounting Policies - Noncontrolling Interests and Segment Reporting (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016 item	Dec. 31, 2015	Mar. 31, 2015 USD ($)
Segment Reporting
Number of operating segments \| item	1
Hilton San Diego Bayfront
Property, Plant and Equipment [Line Items]
Noncontrolling interest percentage in Hilton San Diego Bayfront	25.00%	25.00%
Doubletree Guest Suites Times Square
Property, Plant and Equipment [Line Items]
Preferred equity interest in Doubletree Guest Suites Times Square captive REIT \| $			$ 0.1