Balance Sheet Details - Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Balance Sheet Details [Abstract]
Intangible assets	$ 237,528	$ 237,178
Unbilled receivables	171,787	158,885
Capitalized contract acquisition costs	44,245	43,571
Other	36,948	32,924
Other Assets, Noncurrent	$ 490,508	$ 472,558

Balance Sheet Details [Abstract]

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- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as noncurrent.

+ References

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-Publisher FASB
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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
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- Definition

Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer.

+ References

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Amount of noncurrent assets classified as other.

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