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Business Combination - Summary of Purchase Consideration and the Provisional Fair Value of Goodwill, Identifiable Assets and Liabilities of BHPP Acquired (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about business combination [line items]
Provisional locked box payment received	$ 683
Dividends paid	(3,160)	$ (471)	$ (811)
BHP Petroleum International Pty Ltd [member]
Disclosure of detailed information about business combination [line items]
Provisional locked box payment received	1,513
Dividends paid	$ 830

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- Definition

The amount of dividends recognised as distributions to owners.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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-IssueDate 2022-03-24
-Paragraph 107
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Net provisional locked box payment received as cash flows on acquisition.

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