Revenue From Contracts With Customers - Performance Obligations (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Owned hotels
Disaggregation of Revenue [Line Items]
Outstanding contract liabilities	$ 10.9
Performance obligation, term	1 year
Franchised hotels
Disaggregation of Revenue [Line Items]
Outstanding contract liabilities	$ 5.3
Performance obligation, term	20 years