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Significant Accounting Policies - Additional Information (Detail) - Other Income (Expense) [Member] $ in Millions | 3 Months Ended
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Dec. 31, 2023 USD ($)
Significant Accounting Policies [Line Items] |
Investment income | $ 12
Revaluation of Non-functional Currency [Member] |
Significant Accounting Policies [Line Items] |
Foreign exchange losses | (40)
Single Devaluation Action [Member] |
Significant Accounting Policies [Line Items] |
Foreign exchange losses | $ (33)

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