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Pension And Other Postretirement Benefits (Schedule Of Net Periodic Benefit Costs) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Total selling, general, and administrative expenses $ 261.2 $ 284.5 $ 551.3 $ 558.0
Total non-operating expenses 8.6 6.3 16.1 12.9
Pension Benefits        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost 7.1 6.3 14.3 12.8
Total selling, general, and administrative expenses 7.1 6.3 14.3 12.8
Interest cost 6.8 7.4 13.8 15.0
Expected return on plan assets (8.0) (8.4) (16.4) (17.0)
Net actuarial loss 7.6 4.6 14.8 9.5
Total non-operating expenses 6.4 3.6 12.2 7.5
Net periodic benefit cost 13.5 9.9 26.5 20.3
Postretirement Benefits        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]        
Service cost 0.6 0.5 1.1 1.0
Total selling, general, and administrative expenses 0.6 0.5 1.1 1.0
Interest cost 0.6 0.7 1.2 1.5
Net actuarial loss 0.1 0.1 0.3 0.2
Total non-operating expenses 0.7 0.8 1.5 1.7
Net periodic benefit cost $ 1.3 $ 1.3 $ 2.6 $ 2.7