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Expenses and Other Income - Summary of Expenses and Other Income (Parenthetical) (Detail) - USD ($) $ in Millions |  | 12 Months Ended
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Jan. 11, 2022 | Jun. 30, 2024 | Jun. 30, 2022
Disclosure of Detailed Information About Expenses and Other Income [Line Items] |  |  |
Dividends received from investments accounted for using equity method, classified as investing activities |  | $ 397 |
Carbonesdel Cerrejon Limited Liability Corporation [Member] |  |  |
Disclosure of Detailed Information About Expenses and Other Income [Line Items] |  |  |
Dividends received from investments accounted for using equity method, classified as investing activities |  |  | $ 238
Completion proceeds |  |  | $ 50
Percentage of investment sold | 33.33% |  |

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