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v3.23.1

Equity - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2023 | Mar. 31, 2022
Stockholders' Equity Note [Abstract] |  |  |  |
Repurchases and retirements of ordinary shares | $ 93 | $ 509 | $ 247 | $ 1,035
Stock repurchase program, remaining authorized repurchase amount | $ 3,400 |  | $ 3,400 |

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