Condensed Consolidated Statements Of Income (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 27, 2024	Sep. 29, 2023
Revenue:
Total revenue	$ 875.8	$ 957.3	$ 2,699.9	$ 2,866.3
Cost of sales:
Amortization of purchased intangible assets	18.9	27.7	74.7	80.9
Total cost of sales	300.2	367.1	984.8	1,110.8
Gross margin	575.6	590.2	1,715.1	1,755.5
Operating expense:
Research and development	155.6	162.5	487.3	496.6
Sales and marketing	147.1	146.2	436.4	436.9
General and administrative	127.6	117.2	410.4	369.2
Restructuring	2.4	11.8	14.1	26.1
Amortization of purchased intangible assets	26.5	31.2	79.7	74.8
Total operating expense	459.2	468.9	1,427.9	1,403.6
Operating income	116.4	121.3	287.2	351.9
Non-operating (expense) income, net:
Divestitures (loss) gain, net	(22.6)	5.5	1,695.0	10.6
Interest expense, net	(14.1)	(46.8)	(77.4)	(113.2)
(Loss) income from equity method investments, net	(0.6)	5.2	9.3	24.6
Other (loss) income, net	(6.0)	(5.8)	(6.0)	23.6
Total non-operating (expense) income, net	(43.3)	(41.9)	1,620.9	(54.4)
Income before taxes	73.1	79.4	1,908.1	297.5
Income tax provision	32.5	4.5	493.9	49.2
Net income	$ 40.6	$ 74.9	$ 1,414.2	$ 248.3
Earnings per share:
Basic (in usd per share)	$ 0.17	$ 0.30	$ 5.76	$ 1.00
Diluted (in usd per share)	$ 0.16	$ 0.30	$ 5.73	$ 1.00
Shares used in calculating earnings per share:
Basic (in shares)	245.6	248.6	245.4	248.0
Diluted (in shares)	246.9	249.7	246.9	249.1
Product
Revenue:
Total revenue	$ 307.6	$ 444.0	$ 995.1	$ 1,368.9
Cost of sales:
Cost of sales	160.7	215.6	544.7	665.7
Subscription and services
Revenue:
Total revenue	568.2	513.3	1,704.8	1,497.4
Cost of sales:
Cost of sales	$ 120.6	$ 123.8	$ 365.4	$ 364.2