CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net sales	$ 1,140.9	$ 1,094.0	$ 3,194.6	$ 3,173.9
Cost of sales	281.0	292.4	784.3	828.2
Gross profit	859.9	801.6	2,410.3	2,345.7
Selling, general, and administrative expenses	307.2	306.2	889.9	895.0
Research and development expenses	195.5	195.5	565.0	558.8
Intellectual property litigation expenses (Note 3)	8.4	7.9	400.8	19.5
Change in fair value of contingent consideration liabilities, net (Note 6)	(9.0)	(2.3)	8.4	12.4
Special charge (Note 4)	0.0	0.0	0.0	24.0
Operating income	357.8	294.3	546.2	836.0
Interest income, net	(0.8)	(2.8)	(7.1)	(7.2)
Other income, net	(5.7)	(4.6)	(7.3)	(7.8)
Consolidated pre-tax income	364.3	301.7	560.6	851.0
Provision for income taxes	39.1	27.0	46.7	84.3
Net income	$ 325.2	$ 274.7	$ 513.9	$ 766.7
Earnings per share:
Basic (in dollars per share)	$ 0.52	$ 0.44	$ 0.83	$ 1.23
Diluted (in dollars per share)	$ 0.52	$ 0.43	$ 0.82	$ 1.20
Weighted-average number of common shares outstanding:
Basic (in shares)	622.1	624.6	622.3	624.3
Diluted (in shares)	631.0	636.3	628.8	636.3