Reportable Segment Information Schedule Of Financial Information For Company's Franchising Segment (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reportable Segment Information [Line Items]
Revenues	$ 295,088	$ 267,577	$ 769,785	$ 716,446
Operating income (loss)	77,834	78,618	207,847	186,433
Income (loss) before income taxes	68,514	70,200	177,278	156,188
Corporate & Other
Reportable Segment Information [Line Items]
Revenues	2,056	1,899	5,836	5,127
Operating income (loss)	(22,857)	(13,548)	(48,039)	(38,824)
Income (loss) before income taxes	(31,902)	(23,688)	(75,394)	(69,355)
Hotel Franchising \| Operating Segments
Reportable Segment Information [Line Items]
Revenues	292,229	265,152	761,814	709,924
Operating income (loss)	101,271	95,760	259,045	237,926
Income (loss) before income taxes	100,996	97,482	255,831	238,212
SkyTouch Technology \| Operating Segments
Reportable Segment Information [Line Items]
Revenues	803	526	2,135	1,395
Operating income (loss)	(580)	(3,594)	(3,159)	(12,669)
Income (loss) before income taxes	$ (580)	$ (3,594)	$ (3,159)	$ (12,669)

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(10))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(15))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(8))
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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