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SHAREHOLDERS' EQUITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Sep. 07, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Stockholders' Equity Note [Abstract] |  |  |  |
Number of common shares authorized to be repurchased (in shares) |  | 4,000,000 |  |
Shares of common stock repurchased (in shares) |  | 3,200,000 |  | 1,500,000
Aggregate cost of repurchased shares |  | $ 77,000 |  | $ 28,500
Dividends, Common Stock, Cash |  | $ 106,756 | $ 109,236 | $ 209,798
Dividends declared (in dollars per share) | $ 0.25 | $ 1.00 | $ 1.00 | $ 1.92
Dividends payable |  | $ 26,693 | $ 27,332 |

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