Accumulated Other Comprehensive Loss - Reclassifications (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net sales	$ 1,191.8	$ 949.2	$ 2,270.2	$ 2,039.5
Cost of goods sold	861.0	668.7	1,649.6	1,445.5
Other expense, net	(1.0)	(2.8)	(1.9)	(6.6)
Total before tax	115.4	113.0	216.9	212.9
Tax benefit (expense)	(18.8)	(23.9)	(41.2)	(48.1)
Gain (loss) net of tax	96.6	89.1	175.7	164.8
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gain (loss) net of tax	(2.6)	(1.4)	(4.9)	(2.9)
Cash flow hedges gain (loss): | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net sales	0.0	0.2	(0.1)	0.3
Cost of goods sold	(0.5)	0.3	(0.8)	0.5
Other expense, net	(0.2)	0.0	(0.2)	0.0
Total before tax	(0.7)	0.5	(1.1)	0.8
Tax benefit (expense)	0.2	(0.1)	0.3	(0.2)
Gain (loss) net of tax	(0.5)	0.4	(0.8)	0.6
Prior-service costs | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before tax	(0.1)	0.0	(0.1)	0.1
Actuarial gains/(losses) | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before tax	(2.7)	(2.3)	(5.4)	(4.7)
Pension and post retirement benefit plan adjustment | Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total before tax	(2.8)	(2.3)	(5.5)	(4.6)
Tax benefit (expense)	0.7	0.5	1.4	1.1
Gain (loss) net of tax	$ (2.1)	$ (1.8)	$ (4.1)	$ (3.5)