Pension And Other Postretirement Benefits (Schedule Of Net Periodic Benefit Costs) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Total selling, general, and administrative expenses	$ 270.4	$ 293.0	$ 821.7	$ 851.0
Total non-operating expenses	25.3	5.9	41.4	18.8
Pension Benefits
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	7.2	6.4	21.5	19.2
Total selling, general, and administrative expenses	7.2	6.4	21.5	19.2
Interest cost	6.9	7.5	20.7	22.5
Expected return on plan assets	(8.3)	(8.5)	(24.7)	(25.5)
Net actuarial loss	7.4	4.8	22.2	14.3
Settlement charge	17.7		17.7
Total non-operating expenses	23.7	3.8	35.9	11.3
Net periodic benefit cost	30.9	10.2	57.4	30.5
Postretirement Benefits
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	0.5	0.5	1.6	1.5
Total selling, general, and administrative expenses	0.5	0.5	1.6	1.5
Interest cost	0.6	0.7	1.8	2.2
Net actuarial loss	0.2		0.5	0.2
Total non-operating expenses	0.8	0.7	2.3	2.4
Net periodic benefit cost	$ 1.3	$ 1.2	$ 3.9	$ 3.9