Income Taxes - Summary of Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Income before income taxes	$ 76,526	$ 100,778	$ 244,019	$ 259,720
Provision for income taxes	$ 15,128	$ 30,302	$ 44,082	$ 53,476
Effective income tax rate	20.00%	30.00%	18.00%	21.00%

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details