Employee Benefit Plans (Amounts Recognized in AOCI and Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Changes recognized in other comprehensive income (loss):
Reclassification of pension and post-retirement benefit losses into earnings	$ (5.4)	$ (7.9)	$ (5.9)
Estimated prior service (cost) credits	(0.1)
Pension Benefits [Member]
Amounts recognized in other comprehensive income (loss):
Prior service costs	(0.4)	(0.5)
Actuarial loss	(57.7)	(83.1)
Subtotal	(58.1)	(83.6)
Deferred taxes	15.8	18.6
Net amount recognized	(42.3)	(65.0)
Changes recognized in other comprehensive income (loss):
Current year actuarial loss	(19.4)	(12.2)
Effect of exchange rates	(0.9)	0.0
Amortization of prior service (costs) credits	(0.1)	(0.2)
Reclassification of pension and post-retirement benefit losses into earnings	(5.1)	(8.5)
Total recognized in other comprehensive income	(25.5)	(20.9)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ (19.5)	$ (9.6)