Employee Benefit Plans (Amounts Recognized in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Prior service cost	$ 0.0	$ 0.0
Net loss (gain)	4.5	5.3
Total amounts recognized	4.5	5.3
Other Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Prior service cost	(0.2)	0.1
Net loss (gain)	1.7	6.1
Total amounts recognized	$ 1.5	$ 6.2