Shareholders' Equity (Reclassification out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ (9.2)	$ (5.8)	$ (17.9)	$ (10.9)
Tax impact	(19.8)	(15.0)	(36.4)	(30.0)
Total (income), net of tax	(60.2)	(52.2)	(107.5)	(96.6)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Derivative (Loss) Gain [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Tax impact	0.6	0.3	1.1	0.7
Total (income), net of tax	(2.3)	(1.1)	(4.2)	(2.8)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Derivative (Loss) Gain [Member] | Interest Rate Swap Contracts, Before Tax [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest expense	(2.9)	(1.4)	(5.3)	(3.5)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Amortization of prior service credit [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Other non-operating (income), net	(0.1)	0.0	(0.1)	(0.1)
Reclassification From Accumulated Other Comprehensive Loss [Member] | Amortization of Net Actuarial Loss [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Other non-operating (income), net	0.0	0.4	(0.2)	0.7
Reclassification From Accumulated Other Comprehensive Loss [Member] | Pension And Postretirement Adjustments [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Total (income) loss, before tax	(0.1)	0.4	(0.3)	0.6
Tax impact	0.1	(0.1)	0.1	(0.2)
Total loss, net of tax	0.0	0.3	(0.2)	0.4
Total reclassifications for the period	$ (2.3)	$ (0.8)	$ (4.4)	$ (2.4)