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Rio Tinto financial information by business unit - Schedule of financial information by business unit (Detail) $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2018 USD ($) | Dec. 31, 2018 USD ($) Employee | Dec. 31, 2017 USD ($) Employee | Dec. 31, 2016 USD ($) Employee | Jan. 01, 2018 USD ($)
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 40,522 | $ 40,030 | $ 33,781 |
Proft on ordinary activities before finance items and tax |  | 18,200 | 14,474 | 7,116 |
Depreciation & amortisation in subsidiaries excluding capitalised depreciation |  | (3,909) | (4,302) | (4,691) |
Impairment charges |  | (132) | (796) | (249) |
Net earnings |  | 13,638 | 8,762 | 4,617 |
Capital expenditure |  | 4,844 | 4,344 | 2,658 |
Depreciation and amortisation expense proportionately consolidated |  | 4,015 | 4,375 | 4,794 |
Operating assets |  | $ 43,431 | $ 48,556 | $ 48,877 |
Number of employees | Employee |  | 47,758 | 46,807 | 51,018 |
Pre-tax gains on disposals of property, plant and equipment | $ 549 | $ 586 | $ 138 | $ 354 |
Capital expenditure per cash flow statement |  | 5,430 | 4,482 | 3,012 |
Net cash/(debt) |  | 255 | (3,845) | (9,587) |
Equity attributable to owners of Rio Tinto (see Group balance sheet) |  | 43,686 | 44,711 | 39,290 | $ 44,542
Net assets/(liabilities) of disposal groups held for sale [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Operating assets |  | 440 | 370 | (7) |
Diamonds [member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | 695 | 706 | 613 |
Reportable segments [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | 42,850 | 41,872 | 35,329 |
Capital expenditure |  | 5,279 | 4,691 | 3,355 |
Reportable segments [Member] | Iron Ore [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | 18,485 | 18,251 | 14,605 |
Proft on ordinary activities before finance items and tax |  | 11,325 | 11,520 | 8,526 |
Net earnings |  | 6,514 | 6,692 | 4,611 |
Capital expenditure |  | 1,288 | 1,201 | 868 |
Depreciation and amortisation expense proportionately consolidated |  | 1,682 | 1,645 | 1,645 |
Operating assets |  | $ 14,488 | $ 16,537 | $ 16,359 |
Number of employees | Employee |  | 10,422 | 10,159 | 10,424 |
Reportable segments [Member] | Iron Ore [Member] | Evaluation projects/other [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 126 | $ 108 | $ 75 |
Proft on ordinary activities before finance items and tax |  | 58 | 137 | (32) |
Net earnings |  | 54 | 116 | (51) |
Operating assets |  | 2 | 2 | 2 |
Reportable segments [Member] | Aluminium [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | 12,191 | 11,005 | 9,458 |
Proft on ordinary activities before finance items and tax |  | 3,095 | 3,423 | 2,472 |
Net earnings |  | 1,347 | 1,583 | 947 |
Capital expenditure |  | 1,373 | 1,436 | 916 |
Depreciation and amortisation expense proportionately consolidated |  | 1,122 | 1,199 | 1,250 |
Operating assets |  | $ 16,446 | $ 16,346 | $ 15,782 |
Number of employees | Employee |  | 13,640 | 13,345 | 14,037 |
Reportable segments [Member] | Aluminium [Member] | Intrasegment [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ (861) | $ (790) | $ (786) |
Proft on ordinary activities before finance items and tax |  | (7) | (25) |  |
Net earnings |  | (5) | (17) |  |
Operating assets |  | (20) | (18) |  |
Reportable segments [Member] | Aluminium [Member] | Inter-segment and other [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | (3,226) | (2,321) | (1,822) |
Proft on ordinary activities before finance items and tax |  | (88) | (19) | (50) |
Net earnings |  | (67) | (12) | (13) |
Capital expenditure |  |  | 5 | 1 |
Depreciation and amortisation expense proportionately consolidated |  | (1) | 6 | 25 |
Operating assets |  | $ 789 | $ 772 | $ 171 |
Number of employees | Employee |  | 180 | 222 | 231 |
Reportable segments [Member] | Aluminium [Member] | Integrated operations [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Capital expenditure |  | $ 1,881 | $ 1,436 | $ 916 |
Depreciation and amortisation expense proportionately consolidated |  | 1,122 | 1,199 | 1,250 |
Operating assets |  | $ 16,446 | $ 16,346 | $ 15,782 |
Number of employees | Employee |  | 13,640 | 13,345 | 14,037 |
Reportable segments [Member] | Aluminium [Member] | Other product group items [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Capital expenditure |  | $ (508) |  |  |
Reportable segments [Member] | Aluminium [Member] | Evaluation projects/other [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | 126 | $ 109 | $ 76 |
Proft on ordinary activities before finance items and tax |  | 137 | 126 | 167 |
Net earnings |  | 122 | 115 | 154 |
Reportable segments [Member] | Aluminium [Member] | Bauxite [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | 2,324 | 2,019 | 1,913 |
Proft on ordinary activities before finance items and tax |  | 790 | 804 | 848 |
Net earnings |  | 412 | 463 | 493 |
Capital expenditure |  | 953 | 825 | 343 |
Depreciation and amortisation expense proportionately consolidated |  | 165 | 123 | 110 |
Operating assets |  | $ 2,494 | $ 1,897 | $ 1,278 |
Number of employees | Employee |  | 2,676 | 2,534 | 2,592 |
Reportable segments [Member] | Aluminium [Member] | Alumina [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 3,340 | $ 2,661 | $ 2,118 |
Proft on ordinary activities before finance items and tax |  | 1,137 | 454 | 27 |
Net earnings |  | 634 | 180 | (121) |
Capital expenditure |  | 218 | 108 | 87 |
Depreciation and amortisation expense proportionately consolidated |  | 194 | 209 | 206 |
Operating assets |  | $ 2,721 | $ 2,733 | $ 2,588 |
Number of employees | Employee |  | 2,009 | 2,012 | 2,139 |
Reportable segments [Member] | Aluminium [Member] | Bauxite & Alumina [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 4,803 | $ 3,890 | $ 3,245 |
Proft on ordinary activities before finance items and tax |  | 1,920 | 1,233 | 875 |
Net earnings |  | 1,041 | 626 | 372 |
Capital expenditure |  | 1,171 | 933 | 430 |
Depreciation and amortisation expense proportionately consolidated |  | 359 | 332 | 316 |
Operating assets |  | $ 5,195 | $ 4,612 | $ 3,866 |
Number of employees | Employee |  | 4,685 | 4,546 | 4,731 |
Reportable segments [Member] | Aluminium [Member] | Primary Metal [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 6,468 | $ 5,808 | $ 4,913 |
Proft on ordinary activities before finance items and tax |  | 1,418 | 1,762 | 1,258 |
Net earnings |  | 595 | 778 | 402 |
Capital expenditure |  | 595 | 389 | 394 |
Depreciation and amortisation expense proportionately consolidated |  | 615 | 665 | 716 |
Operating assets |  | $ 9,306 | $ 9,946 | $ 10,701 |
Number of employees | Employee |  | 6,497 | 6,404 | 6,799 |
Reportable segments [Member] | Aluminium [Member] | Pacific Aluminium [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 2,541 | $ 2,305 | $ 1,971 |
Proft on ordinary activities before finance items and tax |  | 148 | 453 | 264 |
Net earnings |  |  | 176 | 62 |
Capital expenditure |  | 115 | 109 | 91 |
Depreciation and amortisation expense proportionately consolidated |  | 149 | 196 | 193 |
Operating assets |  | $ 1,156 | $ 1,016 | $ 1,044 |
Number of employees | Employee |  | 2,278 | 2,173 | 2,276 |
Reportable segments [Member] | Aluminium [Member] | Integrated operations [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 10,586 | $ 9,682 | $ 8,307 |
Proft on ordinary activities before finance items and tax |  | 3,398 | 3,429 | 2,347 |
Net earnings |  | 1,569 | 1,568 | 823 |
Reportable segments [Member] | Aluminium [Member] | Other product group items [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | 1,479 | 1,214 | 1,075 |
Proft on ordinary activities before finance items and tax |  | (440) | (132) | (42) |
Net earnings |  | (344) | (100) | (30) |
Reportable segments [Member] | Aluminium [Member] | Product group operations [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | 12,065 | 10,896 | 9,382 |
Proft on ordinary activities before finance items and tax |  | 2,958 | 3,297 | 2,305 |
Net earnings |  | 1,225 | 1,468 | 793 |
Reportable segments [Member] | Copper & Diamonds [member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | 6,468 | 4,842 | 4,524 |
Proft on ordinary activities before finance items and tax |  | 2,776 | 1,904 | 1,387 |
Net earnings |  | 1,054 | 263 | (18) |
Capital expenditure |  | 2,150 | 1,622 | 1,441 |
Depreciation and amortisation expense proportionately consolidated |  | 1,317 | 1,452 | 1,601 |
Operating assets |  | $ 11,389 | $ 11,743 | $ 11,530 |
Number of employees | Employee |  | 8,671 | 8,354 | 9,489 |
Reportable segments [Member] | Copper & Diamonds [member] | Evaluation projects/other [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Proft on ordinary activities before finance items and tax |  | $ (267) | $ (205) | $ (190) |
Net earnings |  | (149) | (99) | (95) |
Capital expenditure |  | 11 | 1 | (2) |
Depreciation and amortisation expense proportionately consolidated |  | 5 | 5 | 4 |
Operating assets |  | $ 129 | $ 135 | $ 166 |
Number of employees | Employee |  | 146 | 142 | 127 |
Reportable segments [Member] | Copper & Diamonds [member] | Product group operations [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 6,468 | $ 4,842 | $ 4,524 |
Proft on ordinary activities before finance items and tax |  | 3,043 | 2,109 | 1,577 |
Net earnings |  | 1,203 | 362 | 77 |
Capital expenditure |  | 2,139 | 1,621 | 1,443 |
Depreciation and amortisation expense proportionately consolidated |  | 1,312 | 1,447 | 1,597 |
Operating assets |  | $ 11,260 | $ 11,608 | $ 11,364 |
Number of employees | Employee |  | 8,525 | 8,212 | 9,362 |
Reportable segments [Member] | Copper & Diamonds [member] | Diamonds [member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 695 | $ 706 | $ 613 |
Proft on ordinary activities before finance items and tax |  | 301 | 287 | 239 |
Net earnings |  | 118 | 92 | 47 |
Capital expenditure |  | 64 | 85 | 97 |
Depreciation and amortisation expense proportionately consolidated |  | 118 | 132 | 164 |
Operating assets |  | $ 267 | $ 441 | $ 655 |
Number of employees | Employee |  | 967 | 922 | 907 |
Reportable segments [Member] | Energy & Minerals [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 5,697 | $ 7,764 | $ 6,734 |
Proft on ordinary activities before finance items and tax |  | 2,193 | 2,803 | 1,806 |
Net earnings |  | 1,012 | 1,242 | 612 |
Capital expenditure |  | 456 | 467 | 141 |
Depreciation and amortisation expense proportionately consolidated |  | 475 | 652 | 739 |
Operating assets |  | $ 3,861 | $ 6,313 | $ 7,049 |
Number of employees | Employee |  | 10,106 | 10,864 | 13,453 |
Reportable segments [Member] | Energy & Minerals [Member] | Evaluation projects/other [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 60 | $ 43 | $ 22 |
Proft on ordinary activities before finance items and tax |  | (52) | (9) | (31) |
Net earnings |  | (37) | (7) | (25) |
Capital expenditure |  |  |  | 4 |
Depreciation and amortisation expense proportionately consolidated |  |  |  | 1 |
Operating assets |  | $ 41 | $ 41 | $ 38 |
Number of employees | Employee |  | 33 | 25 | 763 |
Reportable segments [Member] | Energy & Minerals [Member] | Product group operations [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 5,637 | $ 7,721 | $ 6,712 |
Proft on ordinary activities before finance items and tax |  | 2,260 | 2,825 | 1,939 |
Net earnings |  | 1,056 | 1,255 | 684 |
Capital expenditure |  | 456 | 467 | 137 |
Depreciation and amortisation expense proportionately consolidated |  | 475 | 652 | 738 |
Operating assets |  | $ 3,805 | $ 6,255 | $ 6,998 |
Number of employees | Employee |  | 10,003 | 10,829 | 12,055 |
Reportable segments [Member] | Energy & Minerals [Member] | Uranium [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 415 | $ 417 | $ 456 |
Proft on ordinary activities before finance items and tax |  | 18 | 15 | 54 |
Net earnings |  | (4) | (26) | 10 |
Capital expenditure |  | 8 | 21 | 30 |
Depreciation and amortisation expense proportionately consolidated |  | 4 | 37 | 25 |
Operating assets |  | $ (406) | $ (327) | $ (143) |
Number of employees | Employee |  | 1,324 | 1,307 | 1,303 |
Reportable segments [Member] | Other operations [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 9 | $ 10 | $ 8 |
Proft on ordinary activities before finance items and tax |  | (70) | (116) | (95) |
Net earnings |  | (102) | (138) | (88) |
Capital expenditure |  | 12 | (35) | (11) |
Depreciation and amortisation expense proportionately consolidated |  | 26 | 32 | 34 |
Operating assets |  | $ (442) | $ (328) | $ 203 |
Number of employees | Employee |  | 187 | 203 | 249 |
Inter-segment transactions [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ (15) | $ (15) | $ (11) |
Operating assets |  | 129 | 206 | 142 |
Product group [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | 42,835 | 41,857 | 35,318 |
Proft on ordinary activities before finance items and tax |  | 19,319 | 19,534 | 14,096 |
Net earnings |  | 9,825 | 9,642 | 6,064 |
Capital expenditure |  | 5,279 | 4,691 | 3,355 |
Depreciation and amortisation expense proportionately consolidated |  | 4,622 | 4,980 | 5,269 |
Operating assets |  | $ 45,742 | $ 50,611 | $ 50,923 |
Number of employees | Employee |  | 43,026 | 42,925 | 47,652 |
Central pension costs, share-based payments and insurance [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Proft on ordinary activities before finance items and tax |  | $ (128) | $ (68) | $ (34) |
Net earnings |  | (90) | (48) | (24) |
Restructuring, Project and One-Off Costs [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Proft on ordinary activities before finance items and tax |  | (272) | (177) | (13) |
Net earnings |  | (190) | (124) | (9) |
Central Costs [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Proft on ordinary activities before finance items and tax |  | (552) | (491) | (364) |
Net earnings |  | (410) | (311) | (208) |
Exploration and evaluation [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Proft on ordinary activities before finance items and tax |  | (231) | (218) | (175) |
Net earnings |  | (193) | (178) | (147) |
Net interest [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Net earnings |  | (134) | (354) | (576) |
Underlying earnings [member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Proft on ordinary activities before finance items and tax |  | 18,136 | 18,580 | 13,510 |
Net earnings |  | 8,808 | 8,627 | 5,100 |
Items excluded from underlying earnings [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  |  | 10 | 18 |
Proft on ordinary activities before finance items and tax |  | 5,127 | 1,912 | (687) |
Net earnings |  | 4,830 | 135 | (483) |
EBITDA and Net Earnings [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Proft on ordinary activities before finance items and tax |  | 23,263 | 20,492 | 12,823 |
Net earnings |  | 13,638 | 8,762 | 4,617 |
Capital expenditure of equity accounted units |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Adjustment for equity accounted units revenue |  | (2,313) | (1,837) | (1,555) |
Depreciation and amortisation in equity accounted units |  | 650 | 648 | 526 |
Taxation and finance items in equity accounted units |  | (372) | (272) | (241) |
Capital expenditure |  | (500) | (417) | (651) |
Depreciation and amortisation expense proportionately consolidated |  | (650) | (647) | (526) |
Other items [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Capital expenditure |  | 65 | 70 | (46) |
Depreciation and amortisation expense proportionately consolidated |  | 43 | 42 | 51 |
Operating assets |  | $ (2,880) | $ (2,631) | $ (2,181) |
Number of employees | Employee |  | 4,432 | 3,882 | 3,377 |
Oyu Tolgoi and Turquoise Hill [Member] | Reportable segments [Member] | Copper & Diamonds [member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 1,180 | $ 940 | $ 1,203 |
Proft on ordinary activities before finance items and tax |  | 375 | 256 | 436 |
Net earnings |  | 69 | 36 | 52 |
Capital expenditure |  | 1,284 | 901 | 322 |
Depreciation and amortisation expense proportionately consolidated |  | 219 | 344 | 450 |
Operating assets |  | $ 6,072 | $ 4,725 | $ 3,804 |
Number of employees | Employee |  | 2,863 | 2,835 | 2,728 |
Grasberg Joint Venture | Reportable segments [Member] | Copper & Diamonds [member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 457 | $ 33 |  |
Proft on ordinary activities before finance items and tax |  | 281 | (3) | $ (17) |
Net earnings |  | 217 | (169) | (64) |
Capital expenditure |  | 171 | 138 | 174 |
Depreciation and amortisation expense proportionately consolidated |  | $ 30 | 42 | 89 |
Operating assets |  |  | $ 1,137 | $ 1,151 |
Number of employees | Employee |  | 1,615 | 1,642 | 2,859 |
Pilbara [member] | Reportable segments [Member] | Iron Ore [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 18,359 | $ 18,143 | $ 14,530 |
Proft on ordinary activities before finance items and tax |  | 11,267 | 11,383 | 8,558 |
Net earnings |  | 6,460 | 6,576 | 4,662 |
Capital expenditure |  | 1,288 | 1,201 | 868 |
Depreciation and amortisation expense proportionately consolidated |  | 1,682 | 1,645 | 1,645 |
Operating assets |  | $ 14,486 | $ 16,535 | $ 16,357 |
Number of employees | Employee |  | 10,422 | 10,159 | 10,424 |
Rio Tinto Kennecott [Member] | Reportable segments [Member] | Copper & Diamonds [member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Ownership percentage in subsidiary |  | 100.00% |  |  |
Consolidated sales revenue |  | $ 1,862 | $ 1,352 | $ 1,243 |
Proft on ordinary activities before finance items and tax |  | 785 | 539 | 126 |
Net earnings |  | 293 | 78 | (228) |
Capital expenditure |  | 318 | 249 | 333 |
Depreciation and amortisation expense proportionately consolidated |  | 427 | 422 | 530 |
Operating assets |  | $ 1,864 | $ 1,936 | $ 2,189 |
Number of employees | Employee |  | 1,993 | 1,734 | 1,638 |
Escondida [Member] | Reportable segments [Member] | Copper & Diamonds [member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Ownership percentage in subsidiary |  | 30.00% |  |  |
Consolidated sales revenue |  | $ 2,274 | $ 1,811 | $ 1,465 |
Proft on ordinary activities before finance items and tax |  | 1,301 | 1,030 | 793 |
Net earnings |  | 506 | 325 | 270 |
Capital expenditure |  | 302 | 248 | 517 |
Depreciation and amortisation expense proportionately consolidated |  | 518 | 507 | 364 |
Operating assets |  | $ 3,057 | $ 3,369 | $ 3,565 |
Number of employees | Employee |  | 1,087 | 1,079 | 1,230 |
Rio Tinto Coal Australia | Reportable segments [Member] | Energy & Minerals [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 989 | $ 2,829 | $ 2,634 |
Proft on ordinary activities before finance items and tax |  | 893 | 1,223 | 893 |
Net earnings |  | 591 | 716 | 382 |
Capital expenditure |  | 32 | 84 | (107) |
Depreciation and amortisation expense proportionately consolidated |  | 34 | 152 | 297 |
Operating assets |  | $ (837) | $ 1,040 | $ 1,807 |
Number of employees | Employee |  | 1,005 | 1,924 | 3,049 |
Iron Ore Company of Canada [member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 1,561 | $ 1,867 |  |
Net earnings |  | 176 | 221 |  |
Equity attributable to owners of Rio Tinto (see Group balance sheet) |  | $ 994 | 1,153 |  |
Iron Ore Company of Canada [member] | Reportable segments [Member] | Energy & Minerals [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Ownership percentage in subsidiary |  | 58.70% |  |  |
Consolidated sales revenue |  | $ 1,583 | 1,867 | $ 1,324 |
Proft on ordinary activities before finance items and tax |  | 586 | 770 | 335 |
Net earnings |  | 166 | 235 | 64 |
Capital expenditure |  | 189 | 202 | 75 |
Depreciation and amortisation expense proportionately consolidated |  | 154 | 157 | 151 |
Operating assets |  | $ 975 | $ 988 | $ 1,018 |
Number of employees | Employee |  | 2,397 | 2,382 | 2,308 |
Rio Tinto Iron Titanium | Reportable segments [Member] | Energy & Minerals [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Consolidated sales revenue |  | $ 1,782 | $ 1,763 | $ 1,419 |
Proft on ordinary activities before finance items and tax |  | 510 | 546 | 370 |
Net earnings |  | 174 | 201 | 86 |
Capital expenditure |  | 169 | 119 | 97 |
Depreciation and amortisation expense proportionately consolidated |  | 201 | 219 | 189 |
Operating assets |  | $ 3,390 | $ 3,881 | $ 3,662 |
Number of employees | Employee |  | 4,058 | 4,048 | 4,094 |
Rio Tinto Borates [Member] | Reportable segments [Member] | Energy & Minerals [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Ownership percentage in subsidiary |  | 100.00% |  |  |
Consolidated sales revenue |  | $ 622 | $ 630 | $ 620 |
Proft on ordinary activities before finance items and tax |  | 197 | 244 | 213 |
Net earnings |  | 111 | 126 | 117 |
Capital expenditure |  | 44 | 28 | 31 |
Depreciation and amortisation expense proportionately consolidated |  | 62 | 65 | 53 |
Operating assets |  | $ 518 | $ 523 | $ 508 |
Number of employees | Employee |  | 980 | 936 | 984 |
Dampier Salt [member] | Reportable segments [Member] | Energy & Minerals [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Ownership percentage in subsidiary |  | 68.40% |  |  |
Consolidated sales revenue |  | $ 246 | $ 215 | $ 259 |
Proft on ordinary activities before finance items and tax |  | 56 | 27 | 74 |
Net earnings |  | 18 | 3 | 25 |
Capital expenditure |  | 14 | 13 | 11 |
Depreciation and amortisation expense proportionately consolidated |  | 20 | 22 | 23 |
Operating assets |  | $ 165 | $ 150 | $ 146 |
Number of employees | Employee |  | 239 | 232 | 317 |
Simandou Iron Ore Project | Reportable segments [Member] | Energy & Minerals [Member] |  |  |  |  |
Disclosure of operating segments [Line Items] |  |  |  |  |
Proft on ordinary activities before finance items and tax |  | $ (15) | $ (13) | $ (102) |
Net earnings |  | (7) | (6) | (47) |
Operating assets |  | $ 15 | $ 17 | $ 13 |
Number of employees | Employee |  | 70 | 10 | 635 |

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