Condensed Consolidated Statements Of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenues	$ 364.4	$ 346.9
Costs and expenses:
Cost of revenues	49.9	50.7
Research and development	24.2	22.9
Selling, General and Administrative Expense	49.0	48.5
Total costs and expenses	123.1	122.1
Operating income	241.3	224.8
Interest expense	(18.8)	(18.8)
Non-operating income (loss), net	11.3	0.3
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	233.8	206.3
Income tax expense	(55.1)	(48.8)
Net Income	178.7	157.5
Other comprehensive income (loss)	0.0	(0.2)
Comprehensive Income	$ 178.7	$ 157.3
Basic income (loss) per share
Net Income	$ 1.70	$ 1.43
Diluted income (loss) per share
Net Income	$ 1.70	$ 1.43
Shares used to compute net income per share
Basic	104.9	110.2
Diluted	105.0	110.3