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Supplemental Financial Statement Information (Tables) | 12 Months Ended
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Dec. 31, 2022
Additional Financial Information Disclosure [Abstract] |
Schedule of cash and cash equivalents | 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 |
Schedule of other non-operating income (expense) | 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) |

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- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
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