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Supplemental Financial Statement Information | 12 Months Ended
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Dec. 31, 2022
Additional Financial Information Disclosure [Abstract] |
Supplemental Financial Statement Information | Supplemental Financial Statement Information Cash and cash equivalents at December 31, 2022 and 2021 were as follows:
(In millions) |  | 2022 |  | 2021
Cash |  | $ | 164.9 |  |  | $ | 222.8 |
Other short-term investments |  | 419.1 |  |  | 464.9 |
Total cash and cash equivalents |  | $ | 584.0 |  |  | $ | 687.7 |
Other current liabilities included salaries, wages and other employee-related liabilities of $100.8 million and $92.7 million, and accrued interest of $11.8 million and $15.2 million at December 31, 2022 and 2021, respectively. Other income (expense) for the years ended December 31, 2022, 2021, and 2020 was as follows:
(in millions) |  | 2022 |  | 2021 |  | 2020
Rent, royalty income and other income |  | $ | 2.3 |  |  | $ | 1.1 |  |  | $ | 0.9 |
Gains from disposal of property, plant and equipment, net |  | 0.2 |  |  | 2.9 |  |  | 2.9 |
Net equity income (loss) on joint ventures (See Note 7) |  | 12.6 |  |  | 0.1 |  |  | (7.0) |
Gain on sales of businesses, net (See Note 6) |  | — |  |  | 13.8 |  |  | — |
Joint venture restructuring credit (charge) (See Note 7) |  | 0.9 |  |  | — |  |  | (2.4) |
Adjustment to indemnification for conditional ARO costs |  | — |  |  | — |  |  | 4.3 |
Litigation settlement (See Note 21) |  | (28.5) |  |  | — |  |  | — |
Other |  | — |  |  | 0.3 |  |  | 0.1 |
Total other income (expense), net |  | $ | (12.5) |  |  | $ | 18.2 |  |  | $ | (1.2) |
Gains from disposal of property, plant and equipment, net for the year ended December 31, 2020 include $2.5 million on sales of certain oil and gas rights in Eddy County, NM. These cash gains are reported as an investing activity on the consolidated statement of cash flows for the year ended December 31, 2020, and are excluded from segment operating results. These oil and gas rights were initially acquired in 1972 along with land purchased by Teledyne, Inc., which later became part of ATI. The land was subsequently sold, with the Company retaining the underlying oil and gas rights that it sold in 2020. In 2020, the Company finalized a settlement agreement for an indemnity claim concerning a conditional ARO with the buyer of a formerly-owned business and as a result, the Company reduced ARO reserves by $4.3 million, which is recorded in other income/expense, net, on the consolidated statements of operations.

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