Employee Benefit Plans (Amounts Recognized in AOCI and Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Changes recognized in other comprehensive income (loss):
Reclassification of pension and post-retirement benefit losses into earnings	$ (7.9)	$ (5.9)	$ (5.7)
Pension Benefits [Member]
Amounts recognized in other comprehensive income (loss):
Prior service costs	(0.5)	(0.7)
Actuarial loss	(83.1)	(103.8)
Subtotal	(83.6)	(104.5)
Deferred taxes	18.6	25.6
Net amount recognized	(65.0)	(78.9)
Changes recognized in other comprehensive income (loss):
Current year actuarial loss	(12.2)	8.1
Effect of exchange rates	0.0	0.5
Amortization of prior service (costs) credits	(0.2)	(0.2)
Reclassification of pension and post-retirement benefit losses into earnings	(8.5)	(6.4)
Total recognized in other comprehensive income	(20.9)	2.0
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ (9.6)	$ 12.5