Recent Accounting Developments - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | ||||
|---|---|---|---|---|---|
Jan. 01, 2021 |
Mar. 31, 2021 |
Mar. 31, 2020 |
Dec. 31, 2020 |
Jan. 01, 2020 |
|
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
| Retained earnings | $ 1,418,617 | $ 1,524,878 | |||
| Long-term debt and finance leases, less current maturities | 3,048,378 | $ 3,066,635 | |||
| Provision (benefit) for income taxes | $ (25,860) | $ (46,766) | |||
| Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2020-06 | |||||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
| Retained earnings | $ 6,100 | ||||
| Long-term debt and finance leases, less current maturities | $ 75,600 | ||||
| Provision (benefit) for income taxes | 17,100 | ||||
| Debt Issuance Costs, Gross | $ 2,900 | ||||