Pensions and Other Postretirement Benefits (Net Periodic Benefit Costs) (Details) - Pension and other postretirement benefits - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 9.5	$ 10.8	$ 28.5	$ 32.5
Interest cost	10.3	8.5	31.1	25.7
Expected return on plan assets	(16.5)	(16.6)	(49.7)	(49.8)
Amortization of prior service costs	0.1	(0.1)	0.2	(0.4)
Recognized net actuarial losses	0.0	(0.4)	(0.1)	(1.2)
Recognized net actuarial losses	0.0	0.0	0.0	(3.1)
Net periodic benefit cost	$ 3.4	$ 3.0	$ 10.2	$ 6.1