Discontinued Operations - Summary of Cash Flows from Discontinued Operations (Detail) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Disclosure of analysis of single amount of discontinued operations [line items]
Net operating cash flows	$ 2,889	$ 1,351	$ 1,021
Net investing cash flows	(904)	(1,520)	(1,033)
Net financing cash flows	(33)	(38)	(39)
Net increase/(decrease) in cash and cash equivalents from Discontinued operations	1,952	(207)	(51)
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	1,351	1,021
Net investing cash flows	(904)	(1,520)	(1,033)
Net financing cash flows	(33)	(38)	(39)
Net increase/(decrease) in cash and cash equivalents from Discontinued operations	1,952	(207)	(51)
Net cash completion payment on merger of Petroleum with Woodside	(683)
Cash and cash equivalents disposed	(399)	0	0
Total cash impact	870	(207)	(51)
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)	$ 0	$ 0

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

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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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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.

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

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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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