Goodwill and Intangible Assets (Tables)

3 Months Ended

Jan. 01, 2021

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)	January 1, 2021						October 2, 2020
		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	5.0	$	18.2	$	(16.7)	$	1.5	$	18.2	$	(15.8)	$	2.4
Developed technology and other	5.0	60.9		(46.3)		14.6		101.0		(81.6)		19.4
Trademarks	3.0	—		—		—		1.6		(1.5)		0.1
Technology licenses	3.1	27.3		(16.5)		10.8		26.3		(14.2)		12.1
IPR&D		19.5		—		19.5		19.5		—		19.5
Total intangible assets		$	125.9	$	(79.5)	$	46.4	$	166.6	$	(113.1)	$	53.5

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 2021		2022		2023		2024		2025		Thereafter
Amortization expense, cost of goods sold	$	3.0	$	0.1	$	0.1	$	0.1	$	0.1	$	1.7
Amortization expense, operating expense	$	12.2	$	5.3	$	1.3	$	1.0	$	1.0	$	1.0
Total amortization expense	$	15.2	$	5.4	$	1.4	$	1.1	$	1.1	$	2.7