Accumulated Other Comprehensive Loss - Detail of Amount Reclassified from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Total reclassifications for the period	$ (1.0)	$ 0.2	$ (1.7)	$ (2.1)
Cost of sales	826.5	820.7	2,356.7	2,369.4
Interest expense, net	48.5	44.8	136.6	131.3
Total pre-tax amount	(102.3)	(109.0)	(234.8)	(339.3)
Tax (expense) benefit	22.8	33.4	65.5	388.4
Earnings before income tax provision	79.5	75.6	169.3	(49.1)
Prior service credit | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income Loss [Line Items]
Total pre-tax amount	0.0	0.0	0.1	0.2
Actuarial losses | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income Loss [Line Items]
Total pre-tax amount	(1.3)	(0.9)	(3.7)	(2.5)
Defined benefit pension plans and other post-employment benefits
Accumulated Other Comprehensive Income Loss [Line Items]
Total reclassifications for the period			(2.7)	(1.6)
Defined benefit pension plans and other post-employment benefits | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income Loss [Line Items]
Total pre-tax amount	(1.3)	(0.9)	(3.6)	(2.3)
Tax benefit	0.3	0.3	0.9	0.7
Total reclassifications for the period	(1.0)	(0.6)	(2.7)	(1.6)
Net gains (losses) on cash flow hedging derivatives
Accumulated Other Comprehensive Income Loss [Line Items]
Total pre-tax amount	0.0	1.1	1.6	(0.6)
Tax (expense) benefit	0.0	(0.3)	(0.6)	0.1
Earnings before income tax provision	0.0	(0.8)	(1.0)	0.5
Net gains (losses) on cash flow hedging derivatives | Foreign currency forward contracts
Accumulated Other Comprehensive Income Loss [Line Items]
Cost of sales	0.0	(1.1)	(1.5)	0.7
Net gains (losses) on cash flow hedging derivatives | Treasury locks
Accumulated Other Comprehensive Income Loss [Line Items]
Interest expense, net	$ 0.0	$ 0.0	$ 0.1	$ 0.1