Shareholders' Equity (Schedule of Accumulated Other Comprehensive (Loss) Activity) (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income (loss) before reclassifications, tax benefit (expense)	$ (4.1)	$ (1.7)
Derivative (Loss) Gain [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income (loss) before reclassifications, tax benefit (expense)	(4.0)	$ (1.7)
Pension And Postretirement Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive income (loss) before reclassifications, tax benefit (expense)	$ (0.1)