Significant Accounting Policies and Practices - Schedule of Contract with Customer (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Assets
Notes and accounts receivable, net	$ 150.7	$ 122.3
Leasehold improvements, equipment and construction in progress, net	40.3	27.4
Other assets, net	17.3	18.3
Liabilities
Accrued expenses	45.1	25.5
Contract asset	11.4	12.2
Contract liability	19.1	$ 20.5
Accounting Standards Update 2014-09
Liabilities
Contract asset	10.4
Contract liability	10.4
Accounting Standards Update 2017-10
Liabilities
Leasehold improvement on service concession contracts	0.5
Balances without Adoption of Topics 606 and 853
Assets
Notes and accounts receivable, net	140.3
Leasehold improvements, equipment and construction in progress, net	40.8
Other assets, net	16.8
Liabilities
Accrued expenses	34.7
Impact of Adoption Increase/(Decrease) | Accounting Standards Update 2017-10 and 2014-09
Assets
Notes and accounts receivable, net	10.4
Leasehold improvements, equipment and construction in progress, net	(0.5)
Other assets, net	0.5
Liabilities
Accrued expenses	$ 10.4