Pension And Other Postretirement Benefits (Schedule Of Net Periodic Benefit Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Total selling, general, and administrative expenses	$ 297.3	$ 261.2	$ 575.2	$ 551.3
Total non-operating expenses	7.3	8.6	15.1	16.1
Pension Benefits
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	7.6	7.1	15.2	14.3
Total selling, general, and administrative expenses	7.6	7.1	15.2	14.3
Interest cost	5.8	6.8	11.9	13.8
Expected return on plan assets	(7.6)	(8.0)	(15.4)	(16.4)
Net actuarial loss	8.3	7.6	16.9	14.8
Total non-operating expenses	6.5	6.4	13.4	12.2
Net periodic benefit cost	14.1	13.5	28.6	26.5
Postretirement Benefits
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	0.5	0.6	1.1	1.1
Total selling, general, and administrative expenses	0.5	0.6	1.1	1.1
Interest cost	0.5	0.6	0.9	1.2
Net actuarial loss	0.1	0.1	0.4	0.3
Total non-operating expenses	0.6	0.7	1.3	1.5
Net periodic benefit cost	$ 1.1	$ 1.3	$ 2.4	$ 2.6