Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Defined benefit plans - Beginning balance			$ (243.5)
Defined benefit plans, net current period other comprehensive income (loss)	$ 3.1	$ 0.6	3.7	$ 5.3
Defined benefit plans - Ending balance	(239.8)		(239.8)
Foreign currency translation adjustments - Beginning balance			(122.4)
Foreign currency translation adjustments, net current period other comprehensive income (loss)	42.8	(0.8)	79.3	15.0
Foreign currency translation adjustments - Ending balance	(43.1)		(43.1)
Unrecognized loss on cash flow hedges - Beginning balance			(23.7)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	0.0	0.0	(0.7)	0.0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	1.1	(4.1)	21.5	(6.4)
Unrecognized loss on cash flow hedges - Ending balance	(2.2)		(2.2)
Other comprehensive income (loss)	47.0	(4.3)	104.5	13.9
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Defined benefit plans - Beginning balance	(242.9)	(219.2)	(243.5)	(223.9)
Defined benefit plans, other comprehensive income (loss), before reclassifications	0.0	0.0	(1.7)	5.7
Income tax effect of other comprehensive income (loss) before reclassifications	0.0	0.0	0.6	(2.0)
Defined benefit plans, amounts reclassified from accumulated other comprehensive loss	4.1	0.7	6.6	2.4
Income taxes reclassified into net income	(1.0)	(0.1)	(1.8)	(0.8)
Defined benefit plans, net current period other comprehensive income (loss)	3.1	0.6	3.7	5.3
Defined benefit plans - Ending balance	(239.8)	(218.6)	(239.8)	(218.6)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Foreign currency translation adjustments - Beginning balance	(85.9)	(103.4)	(122.4)	(119.2)
Foreign currency translation adjustments, other comprehensive income (loss) arising during period	42.8	(0.8)	79.3	15.0
Foreign currency translation adjustments, amounts reclassified from accumulated other comprehensive loss	0.0	0.0	0.0	0.0
Foreign currency translation adjustments, net current period other comprehensive income (loss)	42.8	(0.8)	79.3	15.0
Foreign currency translation adjustments - Ending balance	(43.1)	(104.2)	(43.1)	(104.2)
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member]
Unrecognized loss on cash flow hedges - Beginning balance	(3.3)	(15.7)	(23.7)	(13.4)
Unrecognized loss on cash flow hedges, other comprehensive income (loss) arising during period	0.4	(6.7)	16.2	(13.3)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	0.0	0.0	0.7	0.0
Unrecognized loss on cash flow hedges, amounts reclassified from accumulated other comprehensive loss	0.7	2.6	4.6	6.9
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	1.1	(4.1)	21.5	(6.4)
Unrecognized loss on cash flow hedges - Ending balance	(2.2)	(19.8)	(2.2)	(19.8)
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Accumulated other comprehensive income (loss), net of tax - Beginning balance	(332.1)	(338.3)	(389.6)	(356.5)
Other comprehensive income (loss) arising during period, total	43.2	(7.5)	93.8	7.4
Other Comprehensive Income (Loss) before Reclassifications, Tax	0.0	0.0	1.3	(2.0)
Reclassification from AOCI, Current Period, Tax	4.8	3.3	11.2	9.3
Reclassification from AOCI, Current Period, Tax	(1.0)	(0.1)	(1.8)	(0.8)
Other comprehensive income (loss)	47.0	(4.3)	104.5	13.9
Accumulated other comprehensive income (loss), net of tax - Ending balance	$ (285.1)	$ (342.6)	$ (285.1)	$ (342.6)