Consolidated and Combined Statements of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Sales	$ 2,282.0	$ 2,751.6	$ 2,844.5
Cost of sales	1,123.9	1,238.5	1,242.7
Gross profit	1,158.1	1,513.1	1,601.8
Operating expenses:
Selling, general and administrative	1,024.0	1,080.9	1,131.4
Research and development	100.8	154.7	172.0
Operating profit	33.3	277.5	298.4
Nonoperating (expense) income:
Other (expense) income	(0.9)	1.5	2.7
Interest expense, net	(62.5)	(3.5)	0.0
(Loss) income before income taxes	(30.1)	275.5	301.1
Income tax (benefit) expense	(63.4)	57.9	70.4
Net income	$ 33.3	$ 217.6	$ 230.7
Earnings per share:
Basic (in USD per share)	$ 0.21	$ 1.60	$ 1.80
Diluted (in USD per share)	$ 0.20	$ 1.60	$ 1.80
Average common stock and common equivalent shares outstanding:
Basic (in shares)	159.6	136.2	127.9
Diluted (in shares)	164.1	136.4	127.9