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Net operating costs (excluding items disclosed separately) (Detail) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Aug. 02, 2022 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of attribution of expenses by nature to their function [line items] |  |  |  |  |
Raw materials, consumables, repairs and maintenance |  |  | $ 12,115 | $ 12,019 | $ 12,477
Amortisation of intangible assets |  |  | 138 | 124 | 159
Depreciation of property, plant and equipment |  |  | 5,780 | 5,210 | 4,851
Employment costs |  |  | 7,055 | 6,636 | 6,002
Shipping and other freight costs |  |  | 2,942 | 2,781 | 3,146
Decrease in finished goods and work in progress |  |  | 2,407 | 1,152 | 803
Royalties |  |  | 2,938 | 3,135 | 2,994
Amounts charged by equity accounted units |  |  | 875 | 1,163 | 1,429
Net foreign exchange gains |  |  | (193) | (47) | (42)
Gain on sale of the Cortez royalty |  |  | 0 | 0 | (432)
Gains recognised by Kitimat relating to LNG Canada's project |  |  | 0 | 0 | (116)
Provisions (including exchange differences on provisions) |  |  | 398 | 1,491 | 1,006
Research and development |  |  | 398 | 245 | 76
Other external costs |  |  | 5,037 | 5,295 | 4,161
Costs included above capitalised or shown on a separate line item |  |  | (1,203) | (1,331) | (722)
Other operating income |  |  | (942) | (821) | (1,022)
Net operating costs (excluding items disclosed separately) |  |  | 37,745 | 37,052 | 34,770
Sales of financial assets | [1] |  | 677 | 1,220 | 892
Payments for short-term leases |  |  | 217 | 269 | 465
Payments for variable lease components |  |  | 46 | 40 | 50
Operating costs capitalised |  |  | 923 | 1,007 | 485
Exploration and evaluation costs |  |  | 220 | 247 | 190
Research and development costs within operating costs |  |  | 60 | 77 | 47
Decarbonisation spend |  |  | 306 | 234 | 138
Operating decarbonisation spend included in net operating costs (excluding items disclosed separately |  |  | $ 253 | $ 182 | $ 88
Cortez Royalty |  |  |  |  |
Disclosure of attribution of expenses by nature to their function [line items] |  |  |  |  |
Sales of financial assets |  | $ 525 |  |  |
[1] | In 2024, we received net proceeds of US$675 million (2023: US$1,157 million and 2022: US$352 million) from our sales and purchases of investments within a separately managed portfolio of fixed income instruments. Refer to note 19 for details. Purchases and sales of these securities are reported on a net cash flow basis within “Sales of financial assets” or “Purchases of financial assets” depending on the overall net position at each reporting date.

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- Definition The amount of the expense relating to variable lease payments not included in the measurement of lease liabilities. Variable lease payments are the portion of payments made by a lessee to a lessor for the right to use an underlying asset during the lease term that varies because of changes in facts or circumstances occurring after the commencement date, other than the passage of time. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_e&doctype=Standard -URIDate 2024-03-27 + Details
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