Pension and Other Benefit Programs (Schedule of Net Funded Status) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Benefit obligations as of beginning of period	$ 356.5	$ 337.1
Service cost	2.5	2.6
Interest cost	16.9	16.9
Actuarial (gain) loss	(25.1)	13.7
Benefits paid	(31.6)	(13.8)
Benefit obligations as of end of period	319.2	356.5	$ 337.1
Fair value of plan assets as of beginning of period	413.4	391.7
Actual return on plan assets	(2.4)	32.7
Employer contributions	2.5	2.8
Benefits paid	(31.6)	(13.8)
Fair value of plan assets as of end of period	381.9	413.4	391.7
Funded status	62.7	56.9
U.S. Defined-Benefit Retiree Health And Life Insurance Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligations as of beginning of period	47.6	61.9
Interest cost	2.2	2.9	1.5
Plan participants' contributions	1.5	1.7
Actuarial (gain) loss	(5.0)	(11.6)
Benefits paid	(6.9)	(7.3)
Benefit obligations as of end of period	39.4	47.6	61.9
Fair value of plan assets as of beginning of period	0.0	0.0
Employer contributions	5.4	5.6
Plan participants' contributions	1.5	1.7
Benefits paid	(6.9)	(7.3)
Fair value of plan assets as of end of period	0.0	0.0	$ 0.0
Funded status	$ (39.4)	$ (47.6)