Significant Accounting Policies - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2024
Other Income (Expense) [Member]
Significant Accounting Policies [Line Items]
Investment income (loss)		$ 4,000,000		$ 16,000,000
Other Income (Expense) [Member] | Revaluation of Non-functional Currency [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Foreign exchange losses		(1,000,000)		$ (40,000,000)
Other Income (Expense) [Member] | Single Devaluation Action [Member]
Significant Accounting Policies [Line Items]
Foreign exchange losses			$ (33,000,000)
BOPREAL Bonds [Member]
Significant Accounting Policies [Line Items]
Purchase of bonds to settle foreign payables		30,000,000
Investment income (loss)		(8,000,000)
Proceeds from sale of bonds		$ 22,000,000
Subsequent Event [Member] | BOPREAL Bonds [Member]
Significant Accounting Policies [Line Items]
Purchase of bonds to settle foreign payables	$ 8,000,000