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Information by business segment and by geographic area - Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Information by business segment and by geographic area |  |  |
Product inventory | $ 3,273 | $ 3,371 |
Investments in associates and joint ventures | 2,031 | 2,798 | $ 3,225
Property, plant and equipment and intangible | 50,444 | 55,075 |
Capital expenditures - Sustaining capital | 3,908 | 3,160 | 2,896
Capital expenditures - Project execution | 522 | 544 | 888
Depreciation, depletion and amortization | 3,234 | 3,726 | 3,351
Ferrous minerals |  |  |
Information by business segment and by geographic area |  |  |
Product inventory | 2,017 | 1,955 |
Investments in associates and joint ventures | 1,154 | 1,729 |
Property, plant and equipment and intangible | 29,436 | 33,528 |
Capital expenditures - Sustaining capital | 2,134 | 1,685 | 1,569
Capital expenditures - Project execution | 258 | 385 | 823
Depreciation, depletion and amortization | 1,768 | 2,063 | 1,672
Ferrous minerals | Iron ore |  |  |
Information by business segment and by geographic area |  |  |
Goodwill | 1,373 | 1,770 |
Base metals |  |  |
Information by business segment and by geographic area |  |  |
Product inventory | 1,231 | 1,354 |
Investments in associates and joint ventures | 18 | 14 |
Property, plant and equipment and intangible | 19,549 | 19,893 |
Capital expenditures - Sustaining capital | 1,566 | 1,225 | 1,189
Capital expenditures - Project execution | 239 | 151 | 34
Depreciation, depletion and amortization | 1,397 | 1,351 | 1,351
Base metals | Nickel and other products |  |  |
Information by business segment and by geographic area |  |  |
Goodwill | 1,926 | 1,859 |
Coal |  |  |
Information by business segment and by geographic area |  |  |
Product inventory | 25 | 60 |
Capital expenditures - Sustaining capital | 203 | 240 | 132
Capital expenditures - Project execution |  |  | 24
Depreciation, depletion and amortization | 19 | 237 | 252
Others |  |  |
Information by business segment and by geographic area |  |  |
Product inventory |  | 2 |
Investments in associates and joint ventures | 859 | 1,055 |
Property, plant and equipment and intangible | 1,459 | 1,654 |
Capital expenditures - Sustaining capital | 5 | 10 | 6
Capital expenditures - Project execution | 25 | 8 | 7
Depreciation, depletion and amortization | $ 50 | $ 75 | $ 76

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- Definition Adjustments for depreciation and amortisation expense to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Depreciation and amortisation expense; Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2020-01-01 -Paragraph 20 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B67 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B67_d&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 134 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_134_a&doctype=Standard -URIDate 2020-01-01 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2020-01-01 -Paragraph 135 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2020-en-r&anchor=para_135_a&doctype=Standard -URIDate 2020-01-01 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_c&doctype=Standard -URIDate 2020-01-01 + Details
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