Pension and Other Benefit Programs (Schedule of Amounts Recognized in Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Prepaid pension costs	$ 83.2	$ 109.0
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Prepaid pension costs	83.2	109.0
Accounts payable and accrued expenses	(2.7)	(2.9)
Pension benefit liabilities	(25.9)	(34.5)
Net amount recognized	54.6	71.6
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accounts payable and accrued expenses	(0.1)	(0.1)
Pension benefit liabilities	(1.7)	(2.4)
Net amount recognized	(1.8)	(2.5)
U.S. Defined-Benefit Retiree Health And Life Insurance Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accounts payable and accrued expenses	(7.1)	(6.9)
Postretirement benefit liabilities	(54.8)	(71.1)
Net amount recognized	$ (61.9)	$ (78.0)