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Events After the End of the Reporting Period - Additional information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2024 AUD ($)
Derivatives [member] | JERA Scarborough Pty Ltd [Member] | Currency [Member]
Disclosure of non-adjusting events after reporting period [line items]
Increase (decrease) in hedging position	$ 354

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

Increase (decrease) in hedging position.

+ References

No definition available.

+ Details

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- Details

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- Details

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X

- Details

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