Consolidated Statements of Operations (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014
Revenues:
Product	$ 546.4	$ 521.1	$ 1,093.0	$ 1,033.5
Service and other	109.1	103.9	215.3	203.9
Revenues	655.5	625.0	1,308.3	1,237.4
Costs of revenues:
Product	186.7	185.7	373.4	362.6
Amortization of intangible assets	78.6	76.9	152.5	153.5
Cost Of Goods Sold Impairment Of Intangible Assets	0	26.6	0	26.6
Service and other	54.2	53.7	107.8	107.0
Gross Profit	336.0	282.1	674.6	587.7
Operating expenses:
Research and development	53.3	49.9	105.2	98.6
Selling and marketing	83.0	78.7	169.0	161.9
General and administrative	60.3	62.1	121.7	129.9
Amortization of intangible assets	27.6	29.1	55.4	55.3
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0	0.5	0	0.5
Restructuring and divestiture charges	2.0	11.6	10.0	30.0
Operating expenses	226.2	231.9	461.3	476.2
Income from operations	109.8	50.2	213.3	111.5
Interest income	0.3	0.1	0.7	0.5
Interest expense	(49.4)	(54.4)	(101.9)	(115.7)
Debt extinguishment loss	0	(4.4)	(6.7)	(7.4)
Other income (expense), net	0.1	(3.3)	(0.5)	(2.1)
Income (loss) before income taxes	60.8	(11.8)	104.9	(13.2)
Provision for income taxes	13.0	5.0	27.9	8.9
Net income (loss)	47.8	(16.8)	77.0	(22.1)
Net proceeds from sale of business			$ 0	$ 2.4
Net income (loss) per common share:
Basic (in dollars per share)	$ 0.17	$ (0.06)	$ 0.28	$ (0.08)
Diluted (in dollars per share)	$ 0.17	$ (0.06)	$ 0.27	$ (0.08)
Weighted average number of shares outstanding:
Basic (in shares)	280,338	274,589	279,505	273,648
Diluted (in shares)	287,580	274,589	285,378	273,648