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Repurchase of Shares - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2022 | May 12, 2021
Equity, Class of Treasury Stock [Line Items] |  |
Repurchase of shares, Shares | 6,479 |
Average price at which ordinary shares are repurchased | $ 78.47 |
Share Repurchase Program 2021 Plan [Member] |  |
Equity, Class of Treasury Stock [Line Items] |  |
Share repurchase program, Authorized amount |  | $ 1,000,000,000
Remaining authority to repurchase outstanding ordinary shares | $ 490,109,000 |

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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