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Fair Value Measurements - Schedule of Carrying Amounts and Estimated Fair Values, Financial Instruments (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Revolving Credit Facility | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 350.0 $ 45.0
Revolving Credit Facility | Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments 350.0 45.0
Letters of Credit | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments 0.0 0.0
Letters of Credit | Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments 36.7 38.9
Term loan facilities | Term loan facilities | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments 261.9 265.2
Term loan facilities | Term loan facilities | Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 263.3 $ 266.6
Senior Notes | 5.125% Senior Notes due 2023    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument interest rate (percent) 5.125% 5.125%
Senior Notes | 5.125% Senior Notes due 2023 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 297.5 $ 297.3
Senior Notes | 5.125% Senior Notes due 2023 | Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 298.5 $ 306.6
Senior Notes | 5.75% Senior Notes due 2024    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument interest rate (percent) 5.75% 5.75%
Senior Notes | 5.75% Senior Notes due 2024 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 697.5 $ 697.3
Senior Notes | 5.75% Senior Notes due 2024 | Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 703.5 $ 708.8
Senior Notes | 5.75% Senior Notes due 2025    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument interest rate (percent) 5.75% 5.75%
Senior Notes | 5.75% Senior Notes due 2025 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 345.8 $ 345.6
Senior Notes | 5.75% Senior Notes due 2025 | Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 344.3 $ 369.7
Senior Notes | 4.50% Senior Notes due 2028    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument interest rate (percent) 4.50% 4.50%
Senior Notes | 4.50% Senior Notes due 2028 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 491.9 $ 491.7
Senior Notes | 4.50% Senior Notes due 2028 | Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 491.3 $ 519.4
Senior Notes | 4.75% Senior Notes due 2030    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument interest rate (percent) 4.75% 4.75%
Senior Notes | 4.75% Senior Notes due 2030 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 491.8 $ 491.7
Senior Notes | 4.75% Senior Notes due 2030 | Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments 496.1 520.0
Other Notes Payable | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments 44.5 44.7
Other Notes Payable | Estimated Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying amounts and estimated fair values of financial instruments $ 44.5 $ 44.7