Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 03, 2015	Jun. 27, 2014	Jul. 03, 2015	Jun. 27, 2014
Income Statement [Abstract]
Net revenue	$ 810.0	$ 587.0	$ 2,377.6	$ 1,573.2
Cost of goods sold	416.9	322.8	1,259.3	874.6
Gross profit	393.1	264.2	1,118.3	698.6
Operating expenses:
Research and development	76.8	64.2	220.8	184.2
Selling, general and administrative	48.6	45.8	143.9	128.8
Amortization of intangibles	8.4	5.7	25.2	18.5
Restructuring and other charges	0.5	0.0	2.9	0.0
Total operating expenses	134.3	115.7	392.8	331.5
Operating income	258.8	148.5	725.5	367.1
Other income (expense), net	0.6	0.0	1.9	(0.1)
Income before income taxes	259.4	148.5	727.4	367.0
Provision for income taxes	52.0	37.1	158.3	84.2
Net income	$ 207.4	$ 111.4	$ 569.1	$ 282.8
Earnings per share:
Basic (in dollars per share)	$ 1.09	$ 0.59	$ 3.00	$ 1.51
Diluted (in dollars per share)	$ 1.06	$ 0.58	$ 2.92	$ 1.47
Weighted average shares:
Basic (in shares)	190.0	187.5	189.5	187.0
Diluted (in shares)	195.4	193.2	194.9	192.2
Cash dividends declared and paid per share (usd per share)	$ 0.13	$ 0.11	$ 0.39	$ 0.11