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Debt and Credit Arrangements - Senior Secured and Unsecured Notes (Details) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Dec. 22, 2022 | Dec. 31, 2022 | Dec. 31, 2021
Debt Instrument |  |  |
Unamortized discount |  | $ 29,900,000 | $ 0
Howden And Subsidiaries | Scenario, Plan |  |  |
Debt Instrument |  |  |
Total consideration |  | 4,400,000,000 |
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 |  |
Debt issuance cost | 4,800,000 |  |
Senior secured notes due 2030 | Secured debt |  |  |
Debt Instrument |  |  |
Principal amount | $ 1,460,000,000 | $ 1,460,000,000 | 0
Debt instrument stated interest rate (percent) | 7.50% | 7.50% |
Issue price (percent) | 98.661% |  |
Senior unsecured notes due 2031 | Unsecured Debt |  |  |
Debt Instrument |  |  |
Principal amount | $ 510,000,000.0 | $ 510,000,000.0 | $ 0
Debt instrument stated interest rate (percent) | 9.50% | 9.50% |
Issue price (percent) | 97.949% |  |

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