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Balance Sheet Details - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 92,399	$ 106,991	$ 112,702
Amortization of Intangible Assets	42,900	24,400	29,100
Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 42,900	$ 49,300	$ 53,300

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.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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