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Other income (Narrative) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Other Income [Line Items] |  |  |  |  |
Total other income | $ 188 | $ 69 | $ 859 | $ 258 | $ 891

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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