Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 151,365	$ 317,423	$ 369,171	$ 535,463
Non-Topic 606 revenues	368	261	737	541
Total revenues	151,733	317,684	369,908	536,004
Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	125,227	273,839	330,175	485,433
Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	26,138	43,584	38,996	50,030
Royalty fees
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	50,152	106,427	120,491	186,780
Royalty fees | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	50,152	106,427	120,491	186,780
Royalty fees | Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	0	0	0	0
Initial franchise and relicensing fees
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	6,676	6,675	13,960	13,482
Initial franchise and relicensing fees | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	6,676	6,675	13,960	13,482
Initial franchise and relicensing fees | Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	0	0	0	0
Procurement services
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	10,697	20,829	24,494	32,776
Procurement services | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	10,161	19,648	23,449	31,135
Procurement services | Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	536	1,181	1,045	1,641
Marketing and reservation system
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	79,677	172,465	190,062	282,529
Marketing and reservation system | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	54,436	130,203	153,765	234,281
Marketing and reservation system | Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	25,241	42,262	36,297	48,248
Owned hotels
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	2,000	0	11,314	0
Total revenues	2,108	0	11,530	0
Owned hotels | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	1,639	0	9,660	0
Owned hotels | Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	361	0	1,654	0
Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	2,163	11,027	8,850	19,896
Total revenues	2,423	11,288	9,371	20,437
Other | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	2,163	10,886	8,850	19,755
Other | Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 0	$ 141	$ 0	$ 141