Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 26, 2015	Jun. 27, 2014	Jun. 26, 2015	Jun. 27, 2014
Income Statement [Abstract]
Net sales	$ 965.1	$ 653.1	$ 2,741.3	$ 1,751.1
Cost of sales	431.6	368.8	1,280.6	948.6
Gross profit	533.5	284.3	1,460.7	802.5
Selling, general and administrative expenses	332.7	221.3	938.7	561.6
Research and development expenses	45.0	42.7	134.4	123.1
Separation costs	0.0	1.8	0.0	6.6
Restructuring charges, net	23.1	23.8	34.0	53.5
Gains on divestiture and license	(0.9)	(0.9)	(2.6)	(14.7)
Operating income (loss)	133.6	(4.4)	356.2	72.4
Interest expense	(72.5)	(22.7)	(178.7)	(44.9)
Interest income	0.2	0.3	0.7	1.1
Other (expense) income, net	(0.5)	0.1	7.7	(0.9)
Income from continuing operations before income taxes	60.8	(26.7)	185.9	27.7
Income tax expense (benefit)	3.3	(2.4)	(40.2)	(6.1)
Income from continuing operations	57.5	(24.3)	226.1	33.8
Income (loss) from discontinued operations, net of income taxes	0.5	0.2	23.4	(0.7)
Net income (loss)	$ 58.0	$ (24.1)	$ 249.5	$ 33.1
Basic earnings (loss) per share (Note 7):
Income from continuing operations (in usd per share)	$ 0.49	$ (0.42)	$ 1.94	$ 0.58
Loss from discontinued operations (in usd per share)	0.00	0.00	0.20	(0.01)
Net income (in usd per share)	$ 0.50	$ (0.41)	$ 2.14	$ 0.57
Basic weighted-averaged shares outstanding (in shares)	116.3	58.5	115.5	58.2
Diluted earnings (loss) per share (Note 7):
Income from continuing operations (in usd per share)	$ 0.48	$ (0.42)	$ 1.91	$ 0.57
Loss from discontinued operations (in usd per share)	0.00	0.00	0.20	(0.01)
Net income (in usd per share)	$ 0.49	$ (0.41)	$ 2.11	$ 0.56
Diluted weighted-average shares outstanding (in shares)	117.8	58.5	117.1	59.0