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Balance Sheet Details - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Line Items]
Depreciation and amortization			$ 112,702	$ 115,609	$ 115,424
Amortization of Intangible Assets			29,100	36,400	48,700
Fair Value, Nonrecurring
Property, Plant and Equipment [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)				6,200
Fair Value, Inputs, Level 3 | Fair Value, Nonrecurring
Property, Plant and Equipment [Line Items]
Tangible Asset Impairment Charges	$ 10,300	$ 200
Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization			$ 53,300	$ 56,000	$ 61,300

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. 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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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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The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

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