Accumulated Other Comprehensive Loss - Other Comprehensive Loss Reclassifications (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Cost of goods and services sold	$ (408.5)		$ (332.1)		$ (807.3)	$ (656.6)
Interest expense	(1.9)		(2.0)		(3.8)	(4.0)
Prior service credit	0.0		0.1		0.1	0.3
Actuarial losses	(0.1)		(0.1)		(0.2)	(0.2)
Settlements	(0.1)		(0.9)		(0.7)	(2.3)
Income before income taxes	211.0		102.0		385.9	188.5
Tax benefit (expense)	(32.3)		(16.0)		(61.0)	(31.0)
Total reclassifications for the period, net of tax	187.3	$ 151.2	91.2	$ 74.3	338.5	165.5
Reclassification out of Accumulated Other Comprehensive Loss
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Total reclassifications for the period, net of tax	(2.4)		1.1		(3.9)	1.6
Reclassification out of Accumulated Other Comprehensive Loss | Gains (losses) on derivatives:
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Income before income taxes	(3.5)		2.5		(4.7)	4.8
Tax benefit (expense)	1.2		(0.8)		1.4	(1.6)
Total reclassifications for the period, net of tax	(2.3)		1.7		(3.3)	3.2
Reclassification out of Accumulated Other Comprehensive Loss | Gains (losses) on derivatives: | Foreign currency contracts
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Net sales	(0.5)		0.3		(1.0)	0.6
Cost of goods and services sold	(2.3)		0.3		(2.3)	0.4
Other expense (income)	(0.6)		2.0		(1.2)	4.0
Reclassification out of Accumulated Other Comprehensive Loss | Gains (losses) on derivatives: | Forward treasury locks
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Interest expense	(0.1)		(0.1)		(0.2)	(0.2)
Reclassification out of Accumulated Other Comprehensive Loss | Amortization of defined benefit pension and other postretirement plans:
Reclassification out of Accumulated Other Comprehensive Loss [Line Items]
Prior service credit	0.0		0.1		0.1	0.3
Actuarial losses	(0.1)		(0.1)		(0.2)	(0.2)
Settlements	(0.1)		(0.9)		(0.7)	(2.3)
Income before income taxes	(0.2)		(0.9)		(0.8)	(2.2)
Tax benefit (expense)	0.1		0.3		0.2	0.6
Total reclassifications for the period, net of tax	$ (0.1)		$ (0.6)		$ (0.6)	$ (1.6)