Borrowings - Notes Carried an Effective Interest Rate (Details)	Sep. 30, 2021	Aug. 27, 2021	Sep. 30, 2020
3.50% Convertible Senior Notes due October 1, 2024 \| Notes
Debt Instrument [Line Items]
Effective Interest Rate	3.60%	2.90%	3.60%

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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