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Results of Operations from Oil and Gas Producing Activities (Parenthetical) (Detail) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019
Results of operations for oil and gas producing activities by geographic area [line items] |  |  |
Sales to affiliated companies | $ 51 | $ 62 | $ 75
Valuation provision | 101 | 12 | 21
Results of oil and gas producing activities | 251 | 298 | 1,671
Discontinued operations [member] | Onshore US [Member] |  |  |
Results of operations for oil and gas producing activities by geographic area [line items] |  |  |
Results of oil and gas producing activities | $ 0 | $ 0 | $ 431

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- Definition Results of operations for oil and gas producing activities by geographic area. + References No definition available. + Details
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- Definition Results of operations oil and gas producing activities net income excluding corporate overhead and interest costs. + References No definition available. + Details
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- Definition Results of operations valuation provision. + References No definition available. + Details
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- Details
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