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Additional Information - Summary of Capitalised Costs Relating to Oil and Gas Production Activities (Detail) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Capitalised Costs Relating To Oil Gas Production Activities [Line Items] |  |  |
Unproved properties | $ 2,988 | $ 2,875 | $ 4,459
Proved properties | 64,736 | 40,869 | 37,269
Total costs | 67,724 | 43,744 | 41,728
Less: Accumulated depreciation, depletion, amortisation and valuation provisions | (26,844) | (24,696) | (24,416)
Net capitalised costs | 40,880 | 19,048 | 17,312
Australia [member] |  |  |
Capitalised Costs Relating To Oil Gas Production Activities [Line Items] |  |  |
Unproved properties | 1,154 | 1,172 | 2,709
Proved properties | 49,190 | 38,352 | 35,892
Total costs | 50,344 | 39,524 | 38,601
Less: Accumulated depreciation, depletion, amortisation and valuation provisions | (24,353) | (22,738) | (22,305)
Net capitalised costs | 25,991 | 16,786 | 16,296
International [member] |  |  |
Capitalised Costs Relating To Oil Gas Production Activities [Line Items] |  |  |
Unproved properties | 1,834 | 1,703 | 1,750
Proved properties | 15,546 | 2,517 | 1,377
Total costs | 17,380 | 4,220 | 3,127
Less: Accumulated depreciation, depletion, amortisation and valuation provisions | (2,491) | (1,958) | (2,111)
Net capitalised costs | $ 14,889 | $ 2,262 | $ 1,016

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- Details
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