Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 210,403	$ 310,422	$ 579,574	$ 845,885
Non-Topic 606 revenues	368	310	1,105	851
Total revenues	210,771	310,732	580,679	846,736
Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	195,499	297,730	525,675	783,163
Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	14,904	12,692	53,899	62,722
Royalty fees
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	79,666	113,688	200,157	300,468
Royalty fees | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	79,666	113,688	200,157	300,468
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	6,071	6,741	20,031	20,223
Initial franchise and relicensing fees | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	6,071	6,741	20,031	20,223
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	10,115	14,814	34,609	47,590
Procurement services | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	9,620	14,084	33,069	45,219
Procurement services | Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	495	730	1,540	2,371
Marketing and reservation system
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	107,141	157,024	297,203	439,553
Marketing and reservation system | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	93,327	146,263	247,092	380,544
Marketing and reservation system | Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	13,814	10,761	50,111	59,009
Owned hotels
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	4,093	8,661	15,407	8,661
Total revenues	4,201	8,710	15,731	8,710
Owned hotels | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	3,498	7,460	13,159	7,460
Owned hotels | Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	595	1,201	2,248	1,201
Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	3,317	9,494	12,167	29,390
Total revenues	3,577	9,755	12,948	30,192
Other | Over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	3,317	9,494	12,167	29,249
Other | Point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 0	$ 0	$ 0	$ 141