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Long-Term Debt - Components of long-term debt (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Components of Long-term debt    
Long-term debt $ 3,210,912,000 $ 2,991,910,000
Less: Debt issuance costs and issuance discounts (62,907,000) (57,939,000)
Current portion of long-term debt (18,612,000) (10,612,000)
Net carrying value of long-term debt 3,129,393,000 2,923,359,000
Fair value of long-term debt [1] 3,249,278,000 3,064,194,000
Revolving credit facility | Variable rate credit facility    
Components of Long-term debt    
Long-term debt 0 0
Senior secured notes, due in 2029 | Senior unsecured notes    
Components of Long-term debt    
Long-term debt 550,000,000 550,000,000
Senior unsecured notes, due in 2025 | Senior unsecured notes    
Components of Long-term debt    
Long-term debt 0 400,000,000
Senior unsecured notes, due in 2027 | Senior unsecured notes    
Components of Long-term debt    
Long-term debt 484,655,000 500,000,000
Senior unsecured notes, due in 2031 | Senior unsecured notes    
Components of Long-term debt    
Long-term debt 477,958,000 500,000,000
Term loan, due in 2024    
Components of Long-term debt    
Long-term debt 287,250,000 290,250,000
Term loan, due in 2026    
Components of Long-term debt    
Long-term debt 744,049,000 751,660,000
Term loan, due in 2028    
Components of Long-term debt    
Long-term debt $ 667,000,000 $ 0
[1] * The fair values of debt are estimated based on either quoted private market transactions or observable estimates provided by third party financial professionals, and as such, are classified within Level 2 of the fair value hierarchy.