The amount of liabilities included in disposal groups classified as held for sale. [Refer: Liabilities; Disposal groups classified as held for sale [member]]

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- Definition

The amount of non-current assets or disposal groups classified as held for sale or as held for distribution to owners. [Refer: Non-current assets or disposal groups classified as held for distribution to owners; Non-current assets or disposal groups classified as held for sale]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The cash inflow from sales of interests in joint ventures (other than receipts for those instruments considered to be cash equivalents and those held for dealing or trading purposes), classified as investing activities. [Refer: Joint ventures [member]]

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- Definition

The proportion of the voting rights in a joint venture held by the entity. [Refer: Joint ventures [member]]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount payable due to cost overruns maximum.

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Disclosure of noncurrent assets or disposal groups classified as held for sale.

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- Definition

Disposal group including discontinuued operation consideration receivable.

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Impairment of assets reclassification to held for sale.

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Percentage of sale of interest sold.

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Percentage of Scarborough JV interest sold.

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Proceeds from the sale for capital reimbursements and escalation.

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- Definition

Recognized tax benefit

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Disposal of Assets - Additional Information (Detail) - USD ($) $ in Millions				6 Months Ended	12 Months Ended
	Mar. 26, 2024	Feb. 23, 2024	Aug. 08, 2023	Jun. 30, 2024	Dec. 31, 2023
Disposal of assets [line item]
Assets held for sale				$ 1,378	$ 826
Liabilities directly associated with assets held for sale				119	$ 94
Impairment of assets reclassification to held for sale				0
JERA Scarborough Pty Ltd [Member]
Disposal of assets [line item]
Recognized tax benefit				91
Scarborough [Member]
Disposal of assets [line item]
Proportion of ownership interest in joint venture					10.00%
Scarborough [Member] \| JERA Scarborough Pty Ltd [Member]
Disposal of assets [line item]
Recognized tax benefit				$ 91
Percentage of sale of interest sold					15.10%
Proportion of ownership interest in joint venture				15.10%
Scarborough [Member] \| JERA Scarborough Pty Ltd [Member] \| Bottom of range [member]
Disposal of assets [line item]
Proportion of voting rights held in joint venture				74.90%
Scarborough [Member] \| JERA Scarborough Pty Ltd [Member] \| Top of range [member]
Disposal of assets [line item]
Proportion of voting rights held in joint venture				90.00%
Scarborough [Member] \| AUSTRALIA \| JERA Scarborough Pty Ltd [Member]
Disposal of assets [line item]
Assets held for sale				$ 1,378
Liabilities directly associated with assets held for sale				119
Proportion of ownership interest in joint venture		15.10%
Scarborough [Member] \| L And G Japan [Member]
Disposal of assets [line item]
Proportion of voting rights held in joint venture	90.00%		100.00%
Scarborough [Member] \| L And G Japan [Member] \| JERA Scarborough Pty Ltd [Member]
Disposal of assets [line item]
Disposal group including discontinued operation consideration receivable			$ 740
Scarborough [Member] \| L And G Japan [Member] \| AUSTRALIA
Disposal of assets [line item]
Proceeds from the sale for capital reimbursements and escalation			$ 910
Percentage of sale of interest sold			10.00%
Assets held for sale					$ 823
Liabilities directly associated with assets held for sale					$ 94
Amount payable due to cost overuns maximum			$ 50
Disposal group consideration received on sale of assets				$ 121