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Balance Sheet Details - Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Balance Sheet Details [Abstract]
Unbilled receivables	$ 236,042	$ 215,396
Prepaid expenses	94,024	59,636
Capitalized contract acquisition costs	34,689	34,265
Other	24,187	28,605
Other Assets, Current	$ 388,942	$ 337,902

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Balance Sheet Details [Abstract]

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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 current.

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Amount of current assets classified as other.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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