Goodwill and Intangible Assets (Tables)

9 Months Ended

Jun. 28, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets Excluding Goodwill

Intangible assets consist of the following (in millions):

		As of							As of
	Weighted Average Amortization Period (Years)	June 28, 2019							September 28, 2018
		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationships	3.4	$	31.7	$	(23.8	)	$	7.9	$	31.7	$	(13.2	)	$	18.5
Developed technology and other	4.1	100.0		(46.4		)	53.6		89.9		(23.5		)	66.4
Trademarks	3.0	1.6		(1.2		)	0.4		1.6		(0.8		)	0.8
Capitalized software	2.7	29.3		(13.0		)	16.3		18.0		(6.0		)	12.0
IPR&D		35.9		—			35.9		46.0		—			46.0
Total intangible assets		$	198.5	$	(84.4	)	$	114.1	$	187.2	$	(43.5	)	$	143.7

Schedule Of Expected Annual Amortization Expense Related To Intangible Assets For The Next Five Years

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

	Remaining 2019		2020		2021		2022		2023		Thereafter
Amortization expense, cost of goods sold	$	7.3	$	27.0	$	4.9	$	1.0	$	0.9	$	2.8
Amortization expense, operating expense	$	5.4	$	16.6	$	9.3	$	0.9	$	0.1	$	2.0
Total amortization expense	$	12.7	$	43.6	$	14.2	$	1.9	$	1.0	$	4.8