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Discontinued Operations - Summary of Cash Flows from Discontinued Operations (Parenthetical) (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]      
Proceeds from sale of assets $ 221 $ 158 $ 187
Net repayment of interest bearing liabilities 3,358 8,357 2,008
Other outflows from investing activities (271) (257) (130)
Discontinued operations [member]      
Disclosure of analysis of single amount of discontinued operations [line items]      
Proceeds from sale of assets 151 39 78
Net repayment of interest bearing liabilities 33 38 39
Purchases of property, plant and equipment and capitalised exploration 1,144 1,020 1,079
Proceeds from sale of investment in subsidiaries associates joint operations and joint venture net of cash acquired 91 480 0
Other outflows from investing activities $ 2 $ 59 $ 32