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Equity - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Schedule of accumulated other comprehensive loss |  |
Balance at the beginning of the year | $ (86.3) |
Current-period change | 9.6 |
Balance at the end of the year | (76.7) | $ (86.3)
Deferred tax assets in accumulated other comprehensive loss, pension liabilities | 0.7 | 1.3
Income tax portion attributable to settlement of Reliance SERP |  | 0.3
Foreign Currency Translation (Loss) Gain |  |
Schedule of accumulated other comprehensive loss |  |
Balance at the beginning of the year | (84.0) |
Current-period change | 8.3 |
Balance at the end of the year | (75.7) | (84.0)
Pension and Postretirement Benefit Plan Adjustments, Net of Tax |  |
Schedule of accumulated other comprehensive loss |  |
Balance at the beginning of the year | (2.3) |
Current-period change | 1.3 |
Balance at the end of the year | $ (1.0) | $ (2.3)

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