Goodwill and Intangible Assets (Tables)

9 Months Ended

Jun. 26, 2020

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 26, 2020						September 27, 2019
		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	5.0	$	18.2	$	(14.8)	$	3.4	$	25.6	$	(19.5)	$	6.1
Developed technology and other	3.8	101.0		(74.5)		26.5		94.4		(48.9)		45.5
Trademarks	3.0	1.6		(1.6)		—		1.6		(1.3)		0.3
Technology licenses	3.1	25.1		(11.6)		13.5		24.9		(4.8)		20.1
IPR&D		19.5		—		19.5		35.9		—		35.9
Total intangible assets		$	165.4	$	(102.5)	$	62.9	$	182.4	$	(74.5)	$	107.9

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, excluding IPR&D, is expected to be as follows (in millions):

	Remaining 2020		2021		2022		2023		2024		Thereafter
Amortization expense, cost of goods sold	$	5.3	$	6.0	$	0.1	$	0.1	$	0.1	$	1.8
Amortization expense, operating expense	$	5.0	$	16.2	$	5.0	$	1.0	$	0.9	$	1.9
Total amortization expense	$	10.3	$	22.2	$	5.1	$	1.1	$	1.0	$	3.7