Pension And Postretirement Benefits (Summary Of Benefit Obligations, Fair Value Of Plan Assets And Funded Status) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Change in plan assets, Fair value of plan assets at beginning of year	$ 808.5
Change in plan assets, Fair value of plan assets at end of year	908.1	$ 808.5
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Change in benefit obligation Beginning of year	1,004.0	988.0
Change in benefit obligation, Service cost	5.4	4.7	$ 5.2
Change in benefit obligation, Interest cost	29.5	31.8	37.9
Change in benefit obligation, Plan participants' contributions	0.5	0.5
Change in benefit obligation, Amendments	0.0	0.4
Change in benefit obligation, Actuarial loss	31.6	88.4
Change in benefit obligation, Settlement	(2.3)	(1.7)
Change in benefits paid	(40.8)	(42.4)
Change in benefit obligation, Foreign currency exchange impact	41.8	(65.1)
Change in benefit obligation, Acquisition/divestitures/curtailment	5.4	0.0
Change in benefit obligation, Adjustment for expenses/tax contained in service cost	(0.4)	(0.6)
Change in benefit obligation at end of year	1,074.7	1,004.0	988.0
Change in plan assets, Fair value of plan assets at beginning of year	808.5	816.5
Change in plan assets, Actual return on plan assets	87.4	87.4
Change in plan assets, Foreign currency exchange impact	37.8	(59.1)
Change in plan assets, Employer contributions	12.7	8.3
Change in plan assets, Acquisition/transferred asset	(0.7)	(1.0)
Change in plan assets, Plan participants' contributions	0.5	0.5
Change in plan assets, Settlement	(2.3)	(1.7)
Change in plan assets, Fair value of plan assets at end of year	908.1	808.5	$ 816.5
Change in plan assets, Funded status	$ (166.6)	$ (195.5)