CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Net sales	$ 706.5	$ 548.0	$ 2,100.8	$ 1,566.7
Cost of goods and services sold	418.3	353.4	1,225.6	1,010.0
Gross profit	288.2	194.6	875.2	556.7
Research and development	13.1	12.5	39.1	34.0
Selling, general and administrative expenses	91.9	76.2	264.8	225.7
Other expense (income)	1.8	6.7	3.0	6.2
Operating profit	181.4	99.2	568.3	290.8
Interest expense	1.8	2.1	5.6	6.1
Interest income	(0.4)	(0.2)	(0.7)	(1.2)
Other nonoperating (income) expense	(1.1)	(0.4)	(3.6)	(0.3)
Income before income taxes	181.1	97.7	567.0	286.2
Income tax expense	12.0	21.1	73.0	52.1
Equity in net income of affiliated companies	(6.5)	(5.7)	(20.1)	(13.7)
Net income	$ 175.6	$ 82.3	$ 514.1	$ 247.8
Net income per share:
Basic (in dollars per share)	$ 2.37	$ 1.11	$ 6.95	$ 3.35
Diluted (in dollars per share)	$ 2.31	$ 1.09	$ 6.78	$ 3.28
Weighted average shares outstanding:
Basic (in shares)	74.1	73.9	74.0	73.9
Diluted (in shares)	76.0	75.8	75.8	75.6