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New Accounting Pronouncements - Additional Information (Detail) - USD ($) $ in Thousands | Sep. 30, 2022 | Sep. 30, 2021 | Oct. 01, 2019
--- | --- | --- | ---
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |
Operating lease, liabilities | $ 99,350 |  |
Operating lease right-of-use assets, net | 96,837 | $ 104,901 |
Cumulative effect adjustment to retained earnings, net after tax | $ 630,667 | $ 432,678 |
Accounting Standards Update 2016-02 [Member] |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |
Operating lease, liabilities |  |  | $ 44,000
Operating lease right-of-use assets, net |  |  | 42,100
Accounting Standards Update 2016-02 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |  |
Cumulative effect adjustment to retained earnings, net after tax |  |  | $ 600

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