Employee Benefit And Retirement Plans Employee Benefit And Retirement Plans (Unobservable Inputs Roll Forward) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Acquisitions	$ 73.6
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Defined Benefit Plan, Fair Value of Plan Assets, Beginning	26.9	$ 68.3
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Realized Gains (Losses)	2.2	5.2
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Unrealized Gains (Losses)	(0.6)	(4.9)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales	(20.8)	(41.7)
Defined Benefit Plan, Fair Value of Plan Assets, Ending	$ 81.3	$ 26.9