Other Comprehensive Loss - OCI Components (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pre-Tax Amount	$ (0.6)	$ (0.6)	$ (1.2)	$ (1.3)
Tax Benefit/ (Expense)	0.2	0.2	0.4	0.5
After-Tax Amount	(0.4)	(0.4)	(0.8)	(0.8)
Defined Benefit Pension and Other Postretirement Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pre-Tax Amount	0.1	0.1	0.2	0.3
Tax Benefit/ (Expense)	(0.1)	(0.1)	(0.1)	(0.2)
After-Tax Amount	0.0	0.0	0.1	0.1
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pre-Tax Amount	(0.5)	(0.5)	(1.0)	(1.0)
Tax Benefit/ (Expense)	0.1	0.1	0.3	0.3
After-Tax Amount	(0.4)	(0.4)	(0.7)	(0.7)
Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pre-Tax Amount	(8.3)	1.3	(9.7)	(4.1)
Tax Benefit/ (Expense)	0.0	0.0	0.0	0.0
After-Tax Amount	(8.3)	1.3	(9.7)	(4.1)
Gain (Loss) from Hedging Activities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pre-Tax Amount	(0.2)	(0.4)	0.7	(5.1)
Tax Benefit/ (Expense)	0.0	0.1	(0.2)	1.8
After-Tax Amount	(0.2)	(0.3)	0.5	(3.3)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pre-Tax Amount	(9.0)	0.4	(10.0)	(10.2)
Tax Benefit/ (Expense)	0.1	0.2	0.1	2.1
After-Tax Amount	$ (8.9)	$ 0.6	$ (9.9)	$ (8.1)