Goodwill and Intangible Assets (Tables)

6 Months Ended

Apr. 02, 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)	April 2, 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	$	(17.6)	$	0.6	$	18.2	$	(15.8)	$	2.4
Developed technology and other	4.6	76.7		(52.0)		24.7		101.0		(81.6)		19.4
Trademarks	3.0	—		—		—		1.6		(1.5)		0.1
Technology licenses	3.1	29.4		(19.4)		10.0		26.3		(14.2)		12.1
IPR&D		3.8		—		3.8		19.5		—		19.5
Total intangible assets		$	128.1	$	(89.0)	$	39.1	$	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	$	2.7	$	5.4	$	5.4	$	1.9	$	0.1	$	1.7
Amortization expense, operating expense	$	8.3	$	5.7	$	1.3	$	1.0	$	0.9	$	0.9
Total amortization expense	$	11.0	$	11.1	$	6.7	$	2.9	$	1.0	$	2.6