Long-Lived Assets (Details) $ in Millions	3 Months Ended
	Sep. 25, 2016 a property	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Mar. 25, 2018 USD ($)
Property, Plant and Equipment [Line Items]
Closed operations, properties | property	1
Area of land | a	670
Wildwater Kingdom [Member] | Other Assets [Member]
Property, Plant and Equipment [Line Items]
Assets held-for-sale | $		$ 9.0	$ 9.0	$ 9.0