Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jan. 01, 2016	Jan. 02, 2015
Income Statement [Abstract]
Net revenue	$ 926.8	$ 805.5
Cost of goods sold	454.7	432.5
Gross profit	472.1	373.0
Operating expenses:
Research and development	81.5	68.5
Selling, general and administrative	51.7	47.9
Amortization of intangibles	8.4	8.5
Restructuring and other charges	0.0	1.3
Total operating expenses	141.6	126.2
Operating income	330.5	246.8
Other (expense) income, net	(0.8)	0.7
Merger termination fee	88.5	0.0
Income before income taxes	418.2	247.5
Provision for income taxes	62.9	52.3
Net income	$ 355.3	$ 195.2
Earnings per share:
Basic (in dollars per share)	$ 1.87	$ 1.03
Diluted (in dollars per share)	$ 1.82	$ 1.01
Weighted average shares:
Basic (in shares)	190.4	188.7
Diluted (in shares)	194.7	194.2
Cash dividends declared and paid per share	$ 0.26	$ 0.13