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v3.23.2

Debt (Tables) | 6 Months Ended
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Jun. 30, 2023
Debt Disclosure [Abstract] |
Schedule of Debt Instruments | Debt at June 30, 2023 and December 31, 2022 was as follows (in millions):
| June 30, 2023 |  | December 31, 2022
ATI Inc. 5.875% Notes due 2027 | 350.0 |  |  | 350.0 |
ATI Inc. 5.125% Notes due 2031 | 350.0 |  |  | 350.0 |
ATI Inc. 4.875% Notes due 2029 | 325.0 |  |  | 325.0 |
ATI Inc. 3.5% Convertible Senior Notes due 2025 | 291.4 |  |  | 291.4 |
Allegheny Ludlum 6.95% Debentures due 2025 (a) | 150.0 |  |  | 150.0 |
ABL Term Loan | 200.0 |  |  | 200.0 |
U.S. revolving credit facility | 50.0 |  |  | — |
Foreign credit facilities | 2.0 |  |  | 19.4 |
Finance leases and other | 70.9 |  |  | 79.4 |
Debt issuance costs | (15.5) |  |  | (17.2) |
Debt | 1,773.8 |  |  | 1,748.0 |
Short-term debt and current portion of long-term debt | 73.9 |  |  | 41.7 |
Long-term debt | $ | 1,699.9 |  |  | $ | 1,706.3 |
(a) The payment obligations of these debentures issued by Allegheny Ludlum, LLC are fully and unconditionally guaranteed by ATI.
Interest Income and Interest Expense Disclosure | Interest expense on the 2025 Convertible Notes was as follows:
| Three months ended June 30, |  | Six months ended June 30,
(in millions) | 2023 | 2022 |  | 2023 | 2022
Contractual coupon rate | $ | 2.6 |  | $ | 2.6 |  |  | $ | 5.1 |  | $ | 5.1 |
Amortization of debt issuance costs | 0.4 |  | 0.5 |  |  | 0.9 |  | 0.9 |
Total interest expense | $ | 3.0 |  | $ | 3.1 |  |  | $ | 6.0 |  | $ | 6.0 |

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