Goodwill and Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

The changes to the carrying amount of goodwill are as follows (in millions):

	As of
	September 30, 2016		October 2, 2015
Goodwill at beginning of the period	$	856.7	$	851.0
Goodwill recognized through business combinations (Note 3)	16.6		3.3
Goodwill adjustments	—		2.4
Impairments	—		—
Goodwill at the end of the period	$	873.3	$	856.7

Schedule Of Intangible Assets Excluding Goodwill

Intangible assets consist of the following (in millions):

		As of							As of
	Weighted average amortization period remaining (years)	September 30, 2016							October 2, 2015
		Gross carrying amount		Accumulated amortization			Net carrying amount		Gross carrying amount		Accumulated amortization			Net carrying amount
Customer relationships	4.2	$	78.5	$	(57.7	)	$	20.8	$	57.2	$	(48.7	)	$	8.5
Developed technology and other	5.8	133.8		(89.2		)	44.6		99.7		(64.8		)	34.9
Trademarks	Indefinite	1.6		—			1.6		1.6		—			1.6
Total intangible assets		$	213.9	$	(146.9	)	$	67.0	$	158.5	$	(113.5	)	$	45.0

Schedule of Expected Amortization Expense

Annual amortization expense for the next five years related to intangible assets is expected to be as follows (in millions):

	2017		2018		2019		2020		2021		Thereafter
Amortization expense	$	23.6	$	11.0	$	9.3	$	7.4	$	5.3	$	8.8