Commitments and Contingencies - Franchise Agreements (Details) - USD ($) $ in Millions	1 Months Ended	2 Months Ended	3 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2017	Aug. 31, 2017	Sep. 30, 2016	Aug. 31, 2017	Sep. 30, 2016
Predecessor
Other Commitments
Franchise fee expense		$ 0.2	$ 2.7	$ 0.8	$ 8.2
Minimum
Other Commitments
Franchise agreements, additional fees for marketing central reservation systems and other franchisor costs as percentage of room revenue	3.50%
Maximum
Other Commitments
Franchise agreements term	15 years
Franchise agreements, royalty fee as percentage of room revenue	5.50%
Franchise agreements, additional fees for marketing central reservation systems and other franchisor costs as percentage of room revenue	4.00%