Pension and Other Postretirement Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 1.9	$ 1.8	$ 1.6
Special termination benefits	7.3
Defined Benefit Plan, Fair Value of Plan Assets	416.1	456.9
Pension and Other Postretirement Defined Benefit Plans, Liabilities	(94.6)	(86.6)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	99.9	107.7	78.2	$ 131.1
Other Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation		40.8
Defined Benefit Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation	475.0	502.7	442.7
Defined Benefit Plan, Service Cost	7.4	5.9	6.7
Defined Benefit Plan, Contributions by Employer	2.9	2.4
Unrecognized net actuarial loss (gain)	10.4
Unrecognized prior service credit	(1.0)
Defined Benefit Plan, Interest Cost	19.6	20.7	18.4
Defined Benefit Plan, Actuarial Gain (Loss)	(22.6)	67.0
Defined Benefit Plan, Benefits Paid	(36.9)	(31.2)
Special termination benefits	7.3
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	(2.5)	(2.4)
Defined Benefit Plan, Fair Value of Plan Assets	416.1	456.9	447.8
Defined Benefit Plan, Actual Return on Plan Assets	(4.6)	40.3
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	(2.2)	(2.4)
Defined Benefit Plan, Funded Status of Plan	(58.9)	(45.8)
Pension and Other Postretirement Defined Benefit Plans, Liabilities	(58.9)	(45.8)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Actuarial Loss (Gain) Recognized	163.3	170.9
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Prior Service Credit (Cost) Recognized	(1.1)	(2.1)
Accumulated other comprehensive loss	162.2	168.8
Defined Benefit Plan, Amounts Recognized in Balance Sheet	103.3	123.0
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	101.3	105.4
Retiree Health and Life [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Benefit Obligation	35.0	40.8	40.4
Defined Benefit Plan, Service Cost	0.2	0.1	0.2
Defined Benefit Plan, Contributions by Employer	2.9	3.9
Unrecognized net actuarial loss (gain)	(0.1)
Unrecognized prior service credit	(0.2)
Defined Benefit Plan, Interest Cost	1.3	1.6	1.6
Defined Benefit Plan, Plan Amendments	(2.5)
Defined Benefit Plan, Actuarial Gain (Loss)	(3.6)	2.6
Defined Benefit Plan, Benefits Paid	(2.9)	(3.9)
Special termination benefits	1.7
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	0.0	0.0
Defined Benefit Plan, Fair Value of Plan Assets	0.0	0.0	$ 0.0
Defined Benefit Plan, Actual Return on Plan Assets	0.0	0.0
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	0.0	0.0
Defined Benefit Plan, Funded Status of Plan	(35.0)	(40.8)
Pension and Other Postretirement Defined Benefit Plans, Liabilities	(35.0)	(40.8)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Actuarial Loss (Gain) Recognized	(0.2)	3.3
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Prior Service Credit (Cost) Recognized	(2.0)	0.4
Accumulated other comprehensive loss	(2.2)	3.7
Defined Benefit Plan, Amounts Recognized in Balance Sheet	(37.2)	(37.1)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	$ (1.4)	$ 2.3
Recourse Floating Rate Debt Un Secured Thirteen [Member]
Defined Benefit Plan Disclosure [Line Items]
Debt Instrument, Maturity Date	Dec. 31, 2020