Commitments and Contingencies - Management Agreements (Details) - USD ($) $ in Millions	2 Months Ended	4 Months Ended	8 Months Ended	12 Months Ended
	Aug. 31, 2017	Dec. 31, 2017	Aug. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Commitments
Management agreement term				10 years
NOI Guarantee over life of agreement				$ 100.0
NOI Guarantee annual limit				$ 21.5
Predecessor
Other Commitments
Management fee expense	$ 19.1		$ 23.2		$ 24.0
Management Agreement, Guarantee Earnings Recognized During Period	$ 3.8				$ 5.3	$ 1.4
Minimum
Other Commitments
Management agreement term		5 years
Base management fee as percentage of hotel revenues				2.00%
Maximum
Other Commitments
Management agreement term		20 years
Base management fee as percentage of hotel revenues				5.00%