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UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) | Sep. 30, 2024 | Sep. 30, 2023 | Mar. 19, 2021 | Jan. 30, 2018
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4.75% Convertible Senior Notes |  |  |  |
Stated interest rate (as a percent) | 4.75% | 4.75% | 4.75% |
1.5% Convertible Senior Notes |  |  |  |
Stated interest rate (as a percent) | 1.50% | 1.50% |  | 1.50%

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