Employee Benefit Plans (Net Pension And Postretirement Cost) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 4.1	$ 4.6	$ 8.2	$ 9.3
Interest cost	6.4	7.8	12.8	15.6
Expected return on plan assets	(10.2)	(11.1)	(20.4)	(22.2)
Amortization of net actuarial loss	2.7	2.8	5.3	5.6
Amortization of prior service cost	0.2	0.1	0.5	0.2
Net periodic pension or postretirement benefit cost	3.2	4.2	6.4	8.5
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	0.4	0.3	0.8	0.7
Amortization of prior service cost	0.1	0.1	0.1	0.1
Net periodic pension or postretirement benefit cost	$ 0.5	$ 0.4	$ 0.9	$ 0.8