Income Taxes (Accounting for Uncertainty in Tax Positions) (Details) - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2023 |
Dec. 31, 2022 |
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Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] | ||
Gross unrecognized tax benefits - beginning of the year | $ 26.5 | $ 11.4 |
Increases as a resulting of tax positions taken during a prior-year period | 0.6 | 11.3 |
Decreases as a result of tax positions taken during a prior-year period | (14.3) | 0.0 |
Increases as a result of tax positions taken during the current period | 1.9 | 7.7 |
Decreases relating to settlements with tax authorities | (0.4) | (3.1) |
Decreases as a result of lapse of the applicable statute of limitations | (1.3) | (0.8) |
Gross unrecognized tax benefits - end of the year | $ 13.0 | $ 26.5 |