Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] | |||
Balance at beginning of year | $ 111.0 | $ 101.5 | $ 101.1 |
Additions for tax positions of current year | 1.2 | 7.1 | 0.0 |
Additions for tax positions of prior years | 2.6 | 2.4 | 0.5 |
Reductions for tax positions of prior years | (7.5) | 0.0 | (0.1) |
Reductions for tax positions resulting from lapse of statute of limitations | (0.1) | 0.0 | 0.0 |
Settlements | (65.7) | 0.0 | 0.0 |
Balance at end of year | $ 41.5 | $ 111.0 | $ 101.5 |