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Debt and Credit Arrangements - Senior Secured and Unsecured Notes - Narrative (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Dec. 22, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Debt Instrument |  |  |  |
Interest paid |  | $ 219,800,000 | $ 25,700,000 | $ 11,700,000
Unamortized discount |  | 26,900,000 | 29,900,000 |
Debt issuance cost |  | 26,100,000 | 0 | 0
Financing costs amortization |  | 17,200,000 | 2,900,000 | $ 8,300,000
Debt, Long-term and Short-term, Combined Amount |  | 3,834,900,000 | 2,296,700,000 |
Secured and Unsecured Debt |  |  |  |
Debt Instrument |  |  |  |
Redemption price, percentage of principal amount redeemed (percent) | 40.00% |  |  |
Redemption price (percent) | 101.00% |  |  |
Unamortized discount | $ 30,000,000.0 |  |  |
Unamortized debt issuance cost | 36,800,000 |  |  |
Debt issuance cost incurred |  | 32,000,000.0 | 4,800,000 |
Financing costs amortization |  | 3,800,000 |  |
Senior secured notes due 2030 | Secured Debt |  |  |  |
Debt Instrument |  |  |  |
Debt instrument, face amount | $ 1,460,000,000 | $ 1,460,000,000 | 1,460,000,000 |
Debt instrument stated interest rate (percent) | 7.50% | 7.50% |  |
Issue price (percent) | 98.661% |  |  |
Senior unsecured notes due 2031 | Unsecured Debt |  |  |  |
Debt Instrument |  |  |  |
Debt instrument, face amount | $ 510,000,000.0 | $ 510,000,000.0 | $ 510,000,000.0 |
Debt instrument stated interest rate (percent) | 9.50% | 9.50% |  |
Issue price (percent) | 97.949% |  |  |

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