Contingencies - Legal Proceedings (Details)	1 Months Ended
Dec. 18, 2015 lawsuit	Mar. 31, 2012 location
Pricing Investigation by Korea Fair Trade Commission
Loss Contingencies [Line Items]
Number of hotels included in pricing investigation, managed by company \| location		2
Challenge to Starwood Combination
Loss Contingencies [Line Items]
Lawsuits filed \| lawsuit	7

The total number of new claims filed pertaining to a loss contingency during the period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration