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Debt and Financing Arrangements - Schedule of Debt (Details) € in Millions, $ in Millions | Dec. 31, 2023 USD ($) | Dec. 31, 2023 EUR (€) | Sep. 30, 2023 USD ($)
--- | --- | --- | ---
Long-term debt: |  |  |
Less: debt issuance costs | $ (29) |  | $ (31)
Gross long-term debt | 2,540 |  | 2,533
Less: current portion | 137 |  | 132
Net long-term debt | 2,403 |  | 2,401
Short-term debt: |  |  |
Other bank borrowings | 7 |  | 2
Total short-term debt | 7 |  | 2
Term Loan B due in 2028 |  |  |
Long-term debt: |  |  |
Long-term debt, gross | $ 635 |  | 635
Unsecured debt | 8.25% Notes due 2031 |  |  |
Long-term debt: |  |  |
Interest rate | 8.25% | 8.25% |
Long-term debt, gross | $ 500 |  | 500
Unsecured debt | 4.875% Notes due in 2026 |  |  |
Long-term debt: |  |  |
Interest rate | 4.875% | 4.875% |
Long-term debt, gross | $ 795 |  | 795
Unsecured debt | 3.50% Notes due in 2024 |  |  |
Long-term debt: |  |  |
Interest rate | 3.50% | 3.50% |
Long-term debt, gross | $ 136 | € 123 | 130
Unsecured debt | Other bank borrowings and finance lease obligations |  |  |
Long-term debt: |  |  |
Long-term debt, gross | $ 3 |  | 4
Term Loan | 7.00% Secured Notes due 2028 |  |  |
Long-term debt: |  |  |
Interest rate | 7.00% | 7.00% |
Long-term debt, gross | $ 500 |  | $ 500

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