Condensed Consolidated Statements Of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues	$ 346.9	$ 323.6
Costs and expenses:
Cost of revenues	50.7	47.0
Research and development	22.9	20.3
Selling, General and Administrative Expense	48.5	45.9
Total costs and expenses	122.1	113.2
Operating income	224.8	210.4
Interest expense	(18.8)	(22.5)
Non-operating income (loss), net	0.3	0.4
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	206.3	188.3
Income tax expense	(48.8)	(37.9)
Net Income	157.5	150.4
Other comprehensive income (loss)	(0.2)	0.0
Comprehensive Income	$ 157.3	$ 150.4
Basic income (loss) per share
Net Income	$ 1.43	$ 1.33
Diluted income (loss) per share
Net Income	$ 1.43	$ 1.33
Shares used to compute net income per share
Basic	110.2	113.1
Diluted	110.3	113.3