Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Beginning Balance	$ (139.9)	$ (137.4)	$ (146.1)	$ (131.3)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	3.9	(0.1)	9.0	(7.5)
Other Comprehensive Income (Loss) before Reclassifications, Tax	0.1	0.0	0.1	0.0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	4.0	(0.1)	9.1	(7.5)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	1.5	1.9	3.0	3.8
Reclassification from AOCI, Current Period, Tax	(0.7)	(0.9)	(1.1)	(1.5)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.8	1.0	1.9	2.3
Other Comprehensive Income (Loss), Net of Tax	4.8	0.9	11.0	(5.2)
Ending Balance	(135.1)	(136.5)	(135.1)	(136.5)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Beginning Balance	(49.0)	(41.5)	(55.1)	(33.7)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	4.1	(0.1)	10.2	(7.9)
Other Comprehensive Income (Loss) before Reclassifications, Tax	0.0	0.0	0.0	0.0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	4.1	(0.1)	10.2	(7.9)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	0.0	0.0	0.0	0.0
Reclassification from AOCI, Current Period, Tax	0.0	0.0	0.0	0.0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0	0.0	0.0	0.0
Other Comprehensive Income (Loss), Net of Tax	4.1	(0.1)	10.2	(7.9)
Ending Balance	(44.9)	(41.6)	(44.9)	(41.6)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
Beginning Balance	(87.8)	(91.6)	(87.8)	(93.1)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	0.1	0.0	(0.9)	0.3
Other Comprehensive Income (Loss) before Reclassifications, Tax	0.0	0.0	0.0	0.0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0.1	0.0	(0.9)	0.3
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	1.4	1.8	2.8	3.6
Reclassification from AOCI, Current Period, Tax	(0.6)	(0.8)	(1.0)	(1.4)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.8	1.0	1.8	2.2
Other Comprehensive Income (Loss), Net of Tax	0.9	1.0	0.9	2.5
Ending Balance	(86.9)	(90.6)	(86.9)	(90.6)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
Beginning Balance	(5.4)	(5.8)	(5.5)	(5.9)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	0.0	0.0	0.0	0.0
Other Comprehensive Income (Loss) before Reclassifications, Tax	0.0	0.0	0.0	0.0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0.0	0.0	0.0	0.0
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	0.1	0.1	0.2	0.2
Reclassification from AOCI, Current Period, Tax	(0.1)	(0.1)	(0.1)	(0.1)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0	0.0	0.1	0.1
Other Comprehensive Income (Loss), Net of Tax	0.0	0.0	0.1	0.1
Ending Balance	(5.4)	(5.8)	(5.4)	(5.8)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Beginning Balance	3.3	2.6	3.3	2.6
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(0.3)	0.0	(0.3)	0.0
Other Comprehensive Income (Loss) before Reclassifications, Tax	0.1	0.0	0.1	0.0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(0.2)	0.0	(0.2)	0.0
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	0.0	0.0	0.0	0.0
Reclassification from AOCI, Current Period, Tax	0.0	0.0	0.0	0.0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0	0.0	0.0	0.0
Other Comprehensive Income (Loss), Net of Tax	(0.2)	0.0	(0.2)	0.0
Ending Balance	3.1	2.6	3.1	2.6
Accumulated Other Post Retirement Benefits Adjustment, Net [Member]
Beginning Balance	(1.0)	(1.1)	(1.0)	(1.2)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	0.0	0.0	0.0	0.1
Other Comprehensive Income (Loss) before Reclassifications, Tax	0.0	0.0	0.0	0.0
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0.0	0.0	0.0	0.1
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	0.0	0.0	0.0	0.0
Reclassification from AOCI, Current Period, Tax	0.0	0.0	0.0	0.0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.0	0.0	0.0	0.0
Other Comprehensive Income (Loss), Net of Tax	0.0	0.0	0.0	0.1
Ending Balance	$ (1.0)	$ (1.1)	$ (1.0)	$ (1.1)