Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other comprehensive income (loss)	$ 62.1	$ (218.2)	$ (193.0)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	20.5	21.2
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	0.0	0.0	(13.9)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Net of Tax	12.5	12.9	9.4
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	35.8	(215.2)	(143.3)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	35.8	(215.2)	(129.4)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax	13.8	(15.9)	(59.1)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Tax	(8.0)	(8.3)
Pension and other postretirement liability adjustments, net of tax	26.3	(3.0)	(49.7)
Accumulated other comprehensive loss, net of tax
Foreign currency translation	(330.7)	(366.5)	(151.3)	$ (8.0)
Pension and postretirement liability adjustment, net of tax effect	(117.1)	(143.4)	(140.4)	(90.7)
Tax effect of pension liability adjustment	71.2	89.0
Accumulated other comprehensive income (loss)	(447.8)	(509.9)	(291.7)	$ (98.7)
Before reclassification [Member]
Other comprehensive income (loss)	49.6	(231.1)	(188.5)
Reclassified [Member]
Other comprehensive income (loss)	12.5	12.9	$ (4.5)
Pension Costs [Member]
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Net of Tax	$ 12.5	$ 12.9