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Debt and Other Obligations - Term Loan (Details) € in Millions | 1 Months Ended | 9 Months Ended | 12 Months Ended | 92 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2021 USD ($) | Sep. 30, 2021 USD ($) | Dec. 31, 2014 USD ($) | Aug. 30, 2021 | Sep. 30, 2021 EUR (€) | Dec. 31, 2014 EUR (€)
Cross Currency Interest Rate Contract | Cash Flow Hedge | Designated as hedging instrument |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Notional amount converted into EUR | $ 197,000,000 | $ 197,000,000 |  |  |  |
Term Loan Facility |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Debt face amount |  |  | $ 895,000,000 |  |  |
Term Loan Facility | LIBOR |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Increase (decrease) in basis spread on variable rate | 0.10% | 0.10% |  |  | 0.10% |
Term Loan Facility | LIBOR | Emission Profile Targets Years 2022 Through 2025 |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Increase (decrease) in basis spread on variable rate | 0.10% | 0.10% |  |  | 0.10% |
Term Loan Facility | EURIBOR |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Increase (decrease) in basis spread on variable rate | 0.10% | 0.10% |  |  | 0.10% |
Term Loan Facility | EURIBOR | Emission Profile Targets Years 2022 Through 2025 |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Increase (decrease) in basis spread on variable rate | 0.10% | 0.10% |  |  | 0.10% |
Term Loan Facility | Minimum | LIBOR | Emission Profile Targets Years 2026 Through 2028 |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Increase (decrease) in basis spread on variable rate | 0.05% | 0.05% |  |  | 0.05% |
Term Loan Facility | Minimum | EURIBOR | Emission Profile Targets Years 2026 Through 2028 |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Increase (decrease) in basis spread on variable rate | 0.05% | 0.05% |  |  | 0.05% |
Term Loan Facility | Maximum | LIBOR | Emission Profile Targets Years 2026 Through 2028 |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Increase (decrease) in basis spread on variable rate | 0.10% | 0.10% |  |  | 0.10% |
Term Loan Facility | Maximum | EURIBOR | Emission Profile Targets Years 2026 Through 2028 |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Increase (decrease) in basis spread on variable rate | 0.10% | 0.10% |  |  | 0.10% |
Term Loan - USD |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Debt face amount | $ 300,000,000 | $ 300,000,000 | $ 358,000,000 |  |  |
Term Loan - EUR |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Debt face amount | € |  |  |  |  | € 300.0 | € 399.0
Term Loan |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Required repayment per annum (at least) (as a percent) | 1.00% |  | 1.00% |  |  |
Debt issuance costs, gross | $ 7,800,000 | 7,800,000 |  |  |  |
Debt issuance costs | 2,800,000 | $ 2,800,000 |  |  |  |
Finance costs directly expensed | $ 5,000,000 |  |  |  |  |
Term Loan | LIBOR |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 2.25% | 2.00% |  | 2.00% |  |
Variable rate basis floor | 0.50% |  | 1.00% | 0.00% |  |
Term Loan | EURIBOR |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 2.50% | 2.25% |  |  |  |
Variable rate basis floor | 0.00% |  | 1.00% |  |  |
Term Loan | Minimum | LIBOR |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 3.75% |  |  |
Term Loan | Minimum | EURIBOR |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 3.75% |  |  |
Term Loan | Maximum | LIBOR |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 4.00% |  |  |
Term Loan | Maximum | EURIBOR |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Basis spread on variable rate |  |  | 4.00% |  |  |

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