Valuation and Qualifying Accounts and Reserves (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Reserves against accounts receivable: | |||
| SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance at beginning of period | $ (12.6) | $ (14.4) | $ (12.2) |
| (Charges) Income | (0.8) | (0.1) | (3.2) |
| Deductions from (increase to) reserves and other | 3.1 | 1.9 | 1.0 |
| Balance at end of period | (10.3) | (12.6) | (14.4) |
| Reserves against accounts receivable transferred to held for sale | 1.0 | ||
| Valuation allowances against deferred tax assets: | |||
| SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance at beginning of period | (143.6) | (153.2) | (151.4) |
| (Charges) Income | 78.3 | 21.8 | 5.1 |
| Deductions from (increase to) reserves and other | (4.2) | (12.2) | (6.9) |
| Balance at end of period | $ (69.5) | $ (143.6) | $ (153.2) |