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Debt and Financing Arrangements - Narrative (Details) |  |  | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2023 USD ($) | Sep. 30, 2023 USD ($) | Jan. 31, 2024 | Dec. 31, 2023 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2023 EUR (€) | Dec. 31, 2022 USD ($) | Dec. 31, 2023 EUR (€) | Sep. 30, 2023 EUR (€)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Total interest paid |  |  |  | $ 60,000,000 |  |  | $ 20,000,000 |  |
Proceeds from sale and collection of receivables | $ 85,000,000 | $ 170,000,000 |  |  |  |  |  |  |
Senior notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from issuance of senior long-term debt |  |  |  | 988,000,000 |  |  |  |  |
7.000 % Senior Secured Notes Due 2028 | Senior notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount of debt (up to) |  | $ 500,000,000 |  |  | $ 500,000,000 |  |  |  |
Proceeds from issuance of senior long-term debt |  |  |  |  | $ 494,000,000 |  |  |  |
Interest rate |  | 7.00% |  |  | 7.00% |  |  |  | 7.00%
8.250% Senior unsecured Notes Due 2031 | Unsecured debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount of debt (up to) |  | $ 500,000,000 |  |  | $ 500,000,000 |  |  |  |
Proceeds from issuance of senior long-term debt |  |  |  |  | $ 494,000,000 |  |  |  |
Interest rate |  | 8.25% |  |  | 8.25% |  |  |  | 8.25%
3.50% Notes due in 2024 | Unsecured debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Payment of debt issuance cost |  |  |  | $ 16,000,000 |  |  |  |  |
Face amount of debt (up to) | € |  |  |  |  |  |  |  | € 823,000,000 |
Interest rate | 3.50% |  |  | 3.50% |  |  |  | 3.50% |
Repurchased face amount |  | $ 743,000,000 |  |  | $ 743,000,000 |  |  |  | € 700,000,000
Debt Instrument, unamortized premium |  | 7,000,000 |  |  | 7,000,000 |  |  |  | 7,000,000
Accrued and unpaid interest |  | 3,000,000 |  |  | 3,000,000 |  |  |  | € 3,000,000
Write off of deferred debt issuance cost |  |  |  |  | 2,000,000 | € 2,000,000 |  |  |
Long-term debt, gross | $ 136,000,000 | 130,000,000 |  | $ 136,000,000 | 130,000,000 |  |  | € 123,000,000 |
4.875% Notes due in 2026 | Unsecured debt |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount of debt (up to) | $ 795,000,000 | 795,000,000 |  | $ 795,000,000 | 795,000,000 |  |  |  |
Interest rate | 4.875% |  |  | 4.875% |  |  |  | 4.875% |
Long-term debt, gross | $ 795,000,000 | 795,000,000 |  | $ 795,000,000 | 795,000,000 |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | 1,250,000,000 |  |  | 1,250,000,000 |  |  |  |  |
Payment of debt issuance cost |  |  |  | 7,000,000 |  |  |  |  |
Credit facility expansion |  |  |  | 250,000,000 |  |  |  |  |
Remaining borrowing capacity | 938,000,000 |  |  | $ 938,000,000 |  |  |  |  |
Revolving Credit Facility | Minimum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Commitment fee on unused portion of commitments |  |  |  | 0.25% |  |  |  |  |
Revolving Credit Facility | Minimum | EURIBOR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis spread |  |  |  | 1.50% |  |  |  |  |
Revolving Credit Facility | Maximum |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Commitment fee on unused portion of commitments |  |  |  | 0.375% |  |  |  |  |
Revolving Credit Facility | Maximum | EURIBOR |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis spread |  |  |  | 2.00% |  |  |  |  |
Revolving Credit Facility | North American Subfacility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | 950,000,000 |  |  | $ 950,000,000 |  |  |  |  |
Revolving Credit Facility | European Subfacility |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | 300,000,000 |  |  | 300,000,000 |  |  |  |  |
Letter of Credit |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | 150,000,000 |  |  | 150,000,000 |  |  |  |  |
Remaining borrowing capacity | 12,000,000 |  |  | $ 12,000,000 |  |  |  |  |
Term Loan | Term Loan B due in 2028 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis spread |  |  |  | 3.25% |  |  |  |  |
Face amount of debt (up to) | $ 750,000,000 | $ 635,000,000 |  | $ 750,000,000 | $ 635,000,000 |  |  |  |
First lien secured net leverage ratio |  |  |  | 1.75 |  |  |  |  |
Repayments of secured debt |  |  |  | $ 350,000,000 |  |  |  |  |
Term Loan | Term Loan B due in 2028 | Subsequent Event |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis spread |  |  | 2.75% |  |  |  |  |  |

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