Condensed Consolidated Income Statements - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Apr. 02, 2022
Revenues [Abstract]
Revenue	$ 1,021,690	$ 901,766
Costs and Expenses:
Marketing and sales	166,666	140,186
Research and development	350,295	290,895
General and administrative	53,527	48,937
Amortization of acquired intangibles	4,267	4,964
Restructuring	0	12
Total costs and expenses	699,227	582,837
Income from operations	322,463	318,929
Interest expense	(9,260)	(4,108)
Other income (expense), net	8,284	(4,900)
Income before provision for income taxes	321,487	309,921
Provision for income taxes	79,683	74,586
Net income	$ 241,804	$ 235,335
Net income per share - basic (usd per share)	$ 0.90	$ 0.86
Net Income per share - diluted (usd per share)	$ 0.89	$ 0.85
Weighted average common shares outstanding - basic (in shares)	269,501	272,431
Weighted average common shares outstanding - diluted (in shares)	273,159	276,918
Product and maintenance [Member]
Revenues [Abstract]
Revenue	$ 963,742	$ 846,244
Costs and Expenses:
Cost of sales	100,238	72,795
Service [Member]
Revenues [Abstract]
Revenue	57,948	55,522
Costs and Expenses:
Cost of sales	$ 24,234	$ 25,048