Pension And Other Postretirement Benefits (Schedule Of Net Periodic Benefit Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Total selling, general, and administrative expenses	$ 1,159.9	$ 1,125.0	$ 1,026.6
Total non-operating expenses	23.7	30.6	24.8
Pension Benefits
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	25.6	28.6	26.4
Total selling, general, and administrative expenses	25.6	28.6	26.4
Interest cost	30.0	27.3	27.8
Expected return on plan assets	(34.1)	(31.9)	(30.6)
Net actuarial loss	19.1	26.5	21.5
Prior service cost (gain)		0.3	0.4
Total non-operating expenses	15.0	22.2	19.1
Net periodic benefit cost	$ 40.6	$ 50.8	$ 45.5
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	4.31%	3.67%	4.15%
Expected return on plan assets	5.75%	5.75%	5.75%
Rate of compensation increase	4.36%	4.49%	4.52%
Postretirement Benefits
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 2.0	$ 2.3	$ 2.3
Total selling, general, and administrative expenses	2.0	2.3	2.3
Interest cost	2.9	2.6	2.9
Net actuarial loss	0.3	0.9	0.8
Prior service cost (gain)		(2.0)	(2.2)
Total non-operating expenses	3.2	1.5	1.5
Net periodic benefit cost	$ 5.2	$ 3.8	$ 3.8
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	4.16%	3.44%	3.78%
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year, Net Periodic Benefit Cost		5.50%	6.00%
Defined Benefit Plan Ultimate Health Care Cost Trend Rate For Benefit Obligation, Net Periodic Benefit Cost		5.00%	5.00%