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Equity and Noncontrolling Interests - Narrative (Details) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Mar. 12, 2021 | Sep. 30, 2024 | Sep. 30, 2023 | Nov. 30, 2022
Equity [Abstract] |  |  |  |
Aggregate amount |  |  |  | $ 600,000,000
Stock repurchased and retired during period (in shares) |  | 9,424,668 | 1,756,777 |
Average repurchase price per share (in dollars per share) |  | $ 29.18 | $ 37.00 |
Repurchase and retirement of ordinary shares |  | $ 275,000,000 | $ 65,000,000 |
Stock repurchase program, remaining authorized repurchase amount |  | $ 260,000,000 |  |
Boxun | CQYFAS | The Boxun Agreement |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |
Limited liability company or limited partnership, members or limited partners, ownership interest | 25.00% |  |  |

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