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Financial instruments - Summary of fair value of financial instruments (Detail) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2024
--- | --- | --- | ---
Assets |  |  |
Cash and cash equivalents | $ 9,015 | $ 8,495 | $ 9,256
Investments in equity shares and funds | 354 | 279 |
Other investments, including loans | 540 | 609 |
Trade and other financial receivables | 3,635 | 3,342 |
Loans to equity accounted units | 682 | 509 |
Forward, option and embedded derivatives contracts | 11 | 27 |
Derivatives related to net debt | 169 | 24 |
Liabilities |  |  |
Trade and other financial payables | (7,672) | (6,536) |
Forward, option and embedded derivatives contracts | (222) | (180) |
Derivatives related to net debt | (238) | (367) |
Not Designated As Hedging Instrument |  |  |
Assets |  |  |
Forward, option and embedded derivatives contracts | 187 | 61 |
Liabilities |  |  |
Forward, option and embedded derivatives contracts | (163) | (156) |
Held at amortised cost |  |  |
Assets |  |  |
Cash and cash equivalents | 5,982 | 3,602 |
Investments in equity shares and funds | 0 | 0 |
Other investments, including loans | 135 | 104 |
Trade and other financial receivables | 2,548 | 1,948 |
Loans to equity accounted units | 682 | 509 |
Forward, option and embedded derivatives contracts | 0 | 0 |
Derivatives related to net debt | 0 | 0 |
Liabilities |  |  |
Trade and other financial payables | (7,627) | (6,392) |
Forward, option and embedded derivatives contracts | 0 | 0 |
Derivatives related to net debt | 0 | 0 |
Held at amortised cost | Not Designated As Hedging Instrument |  |  |
Assets |  |  |
Forward, option and embedded derivatives contracts | 0 | 0 |
Liabilities |  |  |
Forward, option and embedded derivatives contracts | 0 | 0 |
Level 1 | Fair value |  |  |
Assets |  |  |
Cash and cash equivalents | 3,033 | 4,893 |
Investments in equity shares and funds | 119 | 96 |
Other investments, including loans | 115 | 230 |
Trade and other financial receivables | 10 | 15 |
Loans to equity accounted units | 0 | 0 |
Forward, option and embedded derivatives contracts | 0 | 0 |
Derivatives related to net debt | 0 | 0 |
Liabilities |  |  |
Trade and other financial payables | 0 | 0 |
Forward, option and embedded derivatives contracts | 0 | 0 |
Derivatives related to net debt | 0 | 0 |
Level 1 | Fair value | Not Designated As Hedging Instrument |  |  |
Assets |  |  |
Forward, option and embedded derivatives contracts | 0 | 0 |
Liabilities |  |  |
Forward, option and embedded derivatives contracts | 0 | 0 |
Level 2 | Fair value |  |  |
Assets |  |  |
Cash and cash equivalents | 0 | 0 |
Investments in equity shares and funds | 0 | 0 |
Other investments, including loans | 0 | 0 |
Trade and other financial receivables | 1,077 | 1,379 |
Loans to equity accounted units | 0 | 0 |
Forward, option and embedded derivatives contracts | 0 | 0 |
Derivatives related to net debt | 169 | 24 |
Liabilities |  |  |
Trade and other financial payables | (45) | (144) |
Forward, option and embedded derivatives contracts | 0 | 0 |
Derivatives related to net debt | (238) | (367) |
Level 2 | Fair value | Not Designated As Hedging Instrument |  |  |
Assets |  |  |
Forward, option and embedded derivatives contracts | 17 | 42 |
Liabilities |  |  |
Forward, option and embedded derivatives contracts | (47) | (48) |
Level 3 | Fair value |  |  |
Assets |  |  |
Cash and cash equivalents | 0 | 0 |
Investments in equity shares and funds | 235 | 183 |
Other investments, including loans | 290 | 275 |
Trade and other financial receivables | 0 | 0 |
Loans to equity accounted units | 0 | 0 |
Forward, option and embedded derivatives contracts | 11 | 27 |
Derivatives related to net debt | 0 | 0 |
Liabilities |  |  |
Trade and other financial payables | 0 | 0 |
Forward, option and embedded derivatives contracts | (222) | (180) |
Derivatives related to net debt | 0 | 0 |
Level 3 | Fair value | Not Designated As Hedging Instrument |  |  |
Assets |  |  |
Forward, option and embedded derivatives contracts | 170 | 19 |
Liabilities |  |  |
Forward, option and embedded derivatives contracts | $ (116) | $ (108) |

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