Discontinued Operations - Summary of Cash Flows from Discontinued Operations (Detail) $ in Millions	12 Months Ended
Jun. 30, 2022 USD ($)
Disclosure of analysis of single amount of discontinued operations [line items]
Net operating cash flows	$ 2,889
Net investing cash flows	(904)
Net financing cash flows	(33)
Net increase/(decrease) in cash and cash equivalents from Discontinued operations	1,952
Net cash completion payment on merger of Petroleum with Woodside	(683)
Cash and cash equivalents disposed	(399)
Discontinued operations [member]
Disclosure of analysis of single amount of discontinued operations [line items]
Net operating cash flows	2,889
Net investing cash flows	(904)
Net financing cash flows	(33)
Net increase/(decrease) in cash and cash equivalents from Discontinued operations	1,952
Net cash completion payment on merger of Petroleum with Woodside	(683)
Cash and cash equivalents disposed	(399)
Total cash impact	870
Discontinued operations [member] \| Operating segments [member] \| Petroleum [member]
Disclosure of analysis of single amount of discontinued operations [line items]
Net cash completion payment on merger of Petroleum with Woodside	$ (683)

Net cash impact on cash and cash equivalents post merger.

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The amount of cash and cash equivalents in subsidiaries or other businesses over which control is obtained or lost. [Refer: Subsidiaries [member]; Cash and cash equivalents]

+ References

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- Definition

The cash flows from (used in) the entity's financing activities, related to discontinued operations. [Refer: Discontinued operations [member]; Cash flows from (used in) financing activities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The cash flows from (used in) the entity's investing activities, related to discontinued operations. [Refer: Discontinued operations [member]; Cash flows from (used in) investing activities]

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The cash flows from (used in) the entity's operating activities, related to discontinued operations. [Refer: Discontinued operations [member]; Cash flows from (used in) operating activities]

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The increase (decrease) in cash and cash equivalents from discontinued operations. [Refer: Cash and cash equivalents; Discontinued operations [member]]

+ References

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The portion of consideration paid or received, consisting of cash and cash equivalents, in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Subsidiaries [member]; Cash and cash equivalents; Consideration paid (received)]

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