Equity (Changes In Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated other comprehensive income (loss)	$ (766.2)	$ (637.6)
Other comprehensive income (loss), net of tax	95.7	(130.2)	$ (6.6)
Accumulated other comprehensive income (loss)	(670.8)	(766.2)	(637.6)
Stockholders' Equity Note, Spinoff Transaction		(18.9)	(49.0)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated other comprehensive income (loss)	(4.5)	7.1
Accumulated other comprehensive income (loss)	3.0	(4.5)	7.1
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated other comprehensive income (loss)	(214.1)	(297.9)
Other comprehensive income (loss), net of tax	15.2	83.8
Accumulated other comprehensive income (loss)	(198.9)	(214.1)	(297.9)
Accumulated Foreign Currency Adjustment Attributable to Parent
Accumulated other comprehensive income (loss)	(547.6)	(346.8)
Other comprehensive income (loss), net of tax	72.7	(200.8)
Accumulated other comprehensive income (loss)	$ (474.9)	$ (547.6)	$ (346.8)