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Impairment of Non-current Assets - Additional Information (Detail) - USD ($) $ in Millions		12 Months Ended
	May 02, 2023	Jun. 30, 2023	Jun. 30, 2022
Disclosure of detailed information about impairment of noncurrent assets [Line items]
Goodwill		$ 1,389	$ 1,197
OZ Minerals Limited [member]
Disclosure of detailed information about impairment of noncurrent assets [Line items]
Additional recognition, goodwill	$ 192
Olympic Dam [member]
Disclosure of detailed information about impairment of noncurrent assets [Line items]
Discount rate applied		6.50%	6.50%
Amount by which unit's recoverable amount exceeds its carrying amount		$ 4,200	$ 2,400
Goodwill		$ 1,010	$ 1,010
Production volume decrease		9.90%	6.00%
Increase in discount rate applied to cash generating units		7.00%
Other Cash Generating Units [Member]
Disclosure of detailed information about impairment of noncurrent assets [Line items]
Goodwill		$ 187	$ 187
Goodwill impairment loss		$ 0	$ 0
Other Cash Generating Units [Member] | Top of range [member]
Disclosure of detailed information about impairment of noncurrent assets [Line items]
Percentage of goodwill included in net assets		1.00%	1.00%

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Disclosure of detailed information about impairment of non-current assets.

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Increase in discount rate applied to cash generating units.

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The amount of additional goodwill recognised, except goodwill included in a disposal group that, on acquisition, meets the criteria to be classified as held for sale in accordance with IFRS 5. [Refer: Goodwill; Disposal groups classified as held for sale [member]]

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The amount by which a cash-generating unit's (group of units') recoverable amount exceeds its carrying amount. [Refer: Carrying amount [member]; Cash-generating units [member]]

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The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Cash-generating units [member]]

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The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]]

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