Pension And Other Benefit Programs (Schedule Of Amounts Recognized In Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Prepaid pension costs	$ 94.8	$ 52.8
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Prepaid pension costs	94.8	52.8
Accounts payable and accrued expenses	(3.9)	(4.3)
Pension benefit liabilities	(43.9)	(47.8)
Net amount recognized	47.0	0.7
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accounts payable and accrued expenses	(0.1)
Pension benefit liabilities	(2.7)	(2.5)
Net amount recognized	(2.8)	(2.5)
U.S. Defined-Benefit Retiree Health And Life Insurance Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accounts payable and accrued expenses	(6.5)	(6.6)
Postretirement benefit liabilities	(71.0)	(58.8)
Net amount recognized	$ (77.5)	$ (65.4)