Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Dec. 30, 2016	Jan. 01, 2016
Income Statement [Abstract]
Net revenue	$ 914.3	$ 926.8
Cost of goods sold	450.4	454.7
Gross profit	463.9	472.1
Operating expenses:
Research and development	82.0	81.5
Selling, general and administrative	50.9	51.7
Amortization of intangibles	8.5	8.4
Restructuring and other charges	0.6	0.0
Total operating expenses	142.0	141.6
Operating income	321.9	330.5
Other expense, net	(0.8)	(0.8)
Merger termination fee	0.0	88.5
Income before income taxes	321.1	418.2
Provision for income taxes	63.3	62.9
Net income	$ 257.8	$ 355.3
Earnings per share:
Basic (in dollars per share)	$ 1.39	$ 1.87
Diluted (in dollars per share)	$ 1.38	$ 1.82
Weighted average shares:
Basic (in shares)	184.8	190.4
Diluted (in shares)	187.3	194.7
Cash dividends declared and paid per share (usd per share)	$ 0.28	$ 0.26