Pensions and Other Benefit Programs (Schedule of Periodic Benefit Costs (Credits) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
U.S. Defined-Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost of benefits earned during the period	$ 0.6	$ 0.7
Interest cost on projected benefit obligation	4.2	4.2
Expected return on plan assets	(6.1)	(6.2)
Amortization of net actuarial (gain) loss	1.3	1.3
Net periodic pension/postretirement cost (credit)	0.0	0.0
Retiree Health And Life Insurance Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost on projected benefit obligation	0.5	0.7
Amortization of prior service credit	(0.1)	0.0
Amortization of net actuarial (gain) loss	(2.1)	(1.5)
Net periodic pension/postretirement cost (credit)	$ (1.7)	$ (0.8)