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Balance Sheet Details - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 416,315	$ 394,908
Accumulated Amortization	(216,027)	(157,730)
Net Carrying Amount	200,288	237,178
Amortization of Intangible Assets	36,400	48,700	$ 34,600
Developed Technology Rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	319,436	305,673
Accumulated Amortization	(151,332)	(111,279)
Net Carrying Amount	168,104	194,394
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	46,142	41,742
Accumulated Amortization	(25,630)	(17,865)
Net Carrying Amount	20,512	23,877
Patents And Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	23,504	20,260
Accumulated Amortization	(19,255)	(17,180)
Net Carrying Amount	4,249	3,080
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	24,973	24,973
Accumulated Amortization	(17,550)	(9,146)
Net Carrying Amount	7,423	15,827
Non-Compete Covenants [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,260	2,260
Accumulated Amortization	(2,260)	(2,260)
Net Carrying Amount	$ 0	$ 0

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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