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Supplemental Financial Statement Information - (Notes) | 3 Months Ended
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Mar. 31, 2024
Other Income and Expenses [Abstract] |
Supplemental Financial Statement Information | Supplemental Financial Statement Information Other income (expense), net for the quarters ended March 31, 2024 and April 2, 2023 was as follows:
(in millions) | Quarter ended
| March 31, 2024 |  | April 2, 2023
Rent and royalty income | $ | 0.8 |  |  | $ | 0.6 |
Gains from disposal of property, plant and equipment, net | — |  |  | 0.3 |
Net equity loss on joint ventures (See Note 5) | (0.4) |  |  | (0.3) |
Total other income, net | $ | 0.4 |  |  | $ | 0.6 |
Restructuring Restructuring charges for the quarter ended March 31, 2024 were $0.2 million, primarily for the involuntary termination of several employees in ATI’s domestic operations. These amounts were presented as a restructuring charge in the consolidated statements of operations and are excluded from segment EBITDA. Restructuring reserves for severance cost activity is as follows:
| Severance and Employee
| Benefit Costs
Balance at December 31, 2023 | $ | 15.2 |
Additions, net | 0.2 |
Payments | (1.5) |
Balance at March 31, 2024 | $ | 13.9 |
The $13.9 million restructuring reserve balance at March 31, 2024 includes $9.7 million recorded in other current liabilities and $4.2 million recorded in other long-term liabilities on the consolidated balance sheet. Supplier Financing The Company participates in supplier financing programs with two financial institutions to offer its suppliers the option for access to payment in advance of an invoice due date. Under such programs, these financial institutions provide early payment to suppliers at their request for invoices that ATI has confirmed as valid at a pre-determined discount rate commensurate with the creditworthiness of ATI. As of March 31, 2024 and December 31, 2023, the Company had $18.4 million and $15.6 million, respectively, reported in accounts payable on the consolidated balance sheets under such programs.

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