Pension and Other Benefit Programs (Schedule of Periodic Benefit (Credit) Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Service cost of benefits earned during the period	$ 2.6	$ 3.7
Interest cost on accumulated postretirement benefit obligation	$ 16.9	$ 10.5
U.S. Defined-Benefit Retiree Health And Life Insurance Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Interest cost on accumulated postretirement benefit obligation	$ 2.9	$ 1.5	$ 1.2
Amortization of prior service (credit)	(0.3)	(0.3)	(0.3)
Amortization of net actuarial (gain) loss	(5.9)	(2.8)	(2.2)
Net periodic postretirement benefit (credit)	$ (3.3)	$ (1.6)	$ (1.3)