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Schedule II Valuation and Qualifying Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Allowance For Doubtful Accounts      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
SEC Schedule, 12-09, Valuation Allowances and Reserves, Business Acquired [1] $ 12.0    
Allowance for Doubtful Accounts Receivable, Noncurrent 22.1 $ 13.2 $ 7.6
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance Beginning of Period 15.5 [2] 10.3 [2] 10.4
Charges or (Reductions) to Costs and Expenses 0.0 5.6 (1.4)
Charges or (Reductions) to Other Accounts 12.0 (0.2) 1.7
Deductions (4.1) (0.2) (0.4)
Balance at End of Period [2] 23.4 15.5 10.3
Valuation Allowance Of Deferred Tax Assets      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance Beginning of Period 584.1 [1] 30.6 [1] 11.9
Charges or (Reductions) to Costs and Expenses 946.2 553.5 18.7
Charges or (Reductions) to Other Accounts [1],[3] 0.0 0.0 0.0
Deductions 0.0 0.0 0.0
Balance at End of Period [1] $ 1,530.3 $ 584.1 $ 30.6
[1] mount relates to allowance of $12.0 million acquired in the Acquisition.
[2] Allowance for doubtful accounts balance includes $22.1 million, $13.2 million, $7.6 million of allowance on long-term receivables recorded in other long term assets for the years ended December 31, 2018, 2017 and 2016, respectively.
[3] The income tax valuation allowance adjustment was recorded to accumulated other comprehensive income and deferred taxes.