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Operating segments | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Operating Segments [Abstract] |
Operating segments | 2 Operating segments Rio Tinto’s management structure is based on the principal product groups in the tables below together with the global functions that support the business, which include Growth & Innovation. Certain comparative amounts have been reallocated to appropriately represent changes in management responsibility. The chief executive of each product group reports to the chief executive of Rio Tinto. The chief executive of Rio Tinto monitors the performance of each product group based on a number of measures, including EBITDA, capital expenditure and operating cash flows, with underlying earnings and free cash flow being the key financial performance indicators. Finance costs and net debt are managed on a Group basis. Generally, business units are allocated to product groups based on their primary product. The Energy & Minerals product group includes businesses with products such as uranium, borates, salt and titanium dioxide feedstock together with coal operations, Iron Ore Company of Canada and the Simandou iron ore project, which is the responsibility of the Energy & Minerals product group chief executive. The Copper & Diamonds product group also produces gold, silver, molybdenum and other by-products. The financial information by business unit provided on pages 206 to 208 of these financial statements provides additional voluntary disclosure which the Group considers useful to the users of the financial statements.
|  |  |  |  | 2017 |  |  | 2016 |  |  | 2015 |
Gross sales revenue |  |  |  | US$m |  | US$m |  | US$m |
Iron Ore |  |  |  |  | 18,251 |  |  | 14,605 |  |  | 13,952 |
Aluminium |  |  |  |  | 11,005 |  |  | 9,458 |  |  | 10,117 |
Copper & Diamonds |  |  |  |  | 4,842 |  |  | 4,524 |  |  | 5,592 |
Energy & Minerals |  |  |  |  | 7,764 |  |  | 6,734 |  |  | 7,140 |
Other Operations |  |  |  |  | 10 |  |  | 8 |  |  | 18 |
Reportable segments total |  |  |  |  | 41,872 |  |  | 35,329 |  |  | 36,819 |
Inter-segment transactions |  |  |  |  | (15 | ) |  | (11 | ) |  | (34 | )
Product group total |  |  |  |  | 41,857 |  |  | 35,318 |  |  | 36,785 |
Items excluded from underlying earnings |  |  |  |  | 10 |  |  | 18 |  |  | (1 | )
Gross sales revenue |  |  |  |  | 41,867 |  |  | 35,336 |  |  | 36,784 |
Share of equity accounted units and adjustments for inter-subsidiary/equity accounted units sales |  |  |  |  | (1,837 | ) |  | (1,555 | ) |  | (1,955 | )
Consolidated sales revenue per income statement |  |  |  |  | 40,030 |  |  | 33,781 |  |  | 34,829 |
Gross sales revenue includes the Group’s proportionate share of sales revenue of equity accounted units (after adjusting for sales to subsidiaries) of US$1,859 million (2016: US$1,585 million; 2015: US$1,987 million) which are not included in consolidated sales revenue. Consolidated sales revenue includes subsidiary sales of US$22 million (2016: US$30 million; 2015: US$32 million) to equity accounted units which are not included in gross sales revenue.
|  |  |  |  | 2017 |  |  | 2016 |  |  | 2015 |
Capital expenditure |  |  |  | US$m |  | US$m |  | US$m |
Iron Ore |  |  |  |  | 1,201 |  |  | 868 |  |  | 1,608 |
Aluminium |  |  |  |  | 1,436 |  |  | 916 |  |  | 1,682 |
Copper & Diamonds |  |  |  |  | 1,622 |  |  | 1,441 |  |  | 1,576 |
Energy & Minerals |  |  |  |  | 467 |  |  | 141 |  |  | 552 |
Other Operations |  |  |  |  | (35 | ) |  | (11 | ) |  | (36 | )
Reportable segments total |  |  |  |  | 4,691 |  |  | 3,355 |  |  | 5,382 |
Other items |  |  |  |  | 70 |  |  | (46 | ) |  | 65 |
Less: capital expenditure of equity accounted units |  |  |  |  | (417 | ) |  | (651 | ) |  | (859 | )
Capital expenditure per financial information by business units |  |  |  |  | 4,344 |  |  | 2,658 |  |  | 4,588 |
Add: proceeds from disposal of property, plant and equipment |  |  |  |  | 138 |  |  | 354 |  |  | 97 |
Capital expenditure per cash flow statement |  |  |  |  | 4,482 |  |  | 3,012 |  |  | 4,685 |
Capital expenditure for reportable segments comprises the net cash outflow on purchases less disposals of property, plant and equipment, capitalised evaluation costs and purchases less disposals of other intangible assets. The details provided include 100 per cent of subsidiaries’ capital expenditure and Rio Tinto’s share of the capital expenditure of joint operations and equity accounted units.
|  |  |  |  | 2017 |  |  | 2016 |  |  | 2015 |
Depreciation and amortisation |  |  |  | US$m |  | US$m |  | US$m |
Iron Ore |  |  |  |  | 1,645 |  |  | 1,645 |  |  | 1,744 |
Aluminium |  |  |  |  | 1,199 |  |  | 1,250 |  |  | 1,172 |
Copper & Diamonds |  |  |  |  | 1,452 |  |  | 1,601 |  |  | 1,261 |
Energy & Minerals |  |  |  |  | 652 |  |  | 739 |  |  | 830 |
Other Operations |  |  |  |  | 32 |  |  | 34 |  |  | 32 |
Reportable segments total |  |  |  |  | 4,980 |  |  | 5,269 |  |  | 5,039 |
Other items |  |  |  |  | 42 |  |  | 51 |  |  | 68 |
Less: depreciation and amortisation of equity accounted units |  |  |  |  | (647 | ) |  | (526 | ) |  | (462 | )
Depreciation and amortisation per note 4 |  |  |  |  | 4,375 |  |  | 4,794 |  |  | 4,645 |
Notes to the 2017 financial statements continued 2 Operating segments continued Product group depreciation and amortisation for reportable segments totals include 100 per cent of subsidiaries’ depreciation and amortisation and Rio Tinto’s share of the depreciation and amortisation of equity accounted units. Rio Tinto’s share of the depreciation and amortisation charge of equity accounted units is deducted to arrive at depreciation and amortisation, excluding equity accounted units, as shown in note 4. These figures exclude impairment charges and reversals, which are excluded from underlying earnings.
|  |  |  |  | 2017 |  |  | 2016 |  |  | 2015 |
Tax charge/(credit) |  |  |  | US$m |  | US$m |  | US$m |
Iron Ore |  |  |  |  | 2,871 |  |  | 2,005 |  |  | 1,747 |
Aluminium |  |  |  |  | 543 |  |  | 171 |  |  | 303 |
Copper & Diamonds |  |  |  |  | 48 |  |  | (320 | ) |  | (77 | )
Energy & Minerals |  |  |  |  | 652 |  |  | 331 |  |  | 122 |
Other Operations |  |  |  |  | (84 | ) |  | (73 | ) |  | (73 | )
Reportable segments total |  |  |  |  | 4,030 |  |  | 2,114 |  |  | 2,022 |
Other items |  |  |  |  | (261 | ) |  | (191 | ) |  | (192 | )
Exploration and evaluation not attributed to product groups |  |  |  |  | (36 | ) |  | (27 | ) |  | (25 | )
Net finance costs |  |  |  |  | (364 | ) |  | (484 | ) |  | (245 | )
|  |  |  |  | 3,369 |  |  | 1,412 |  |  | 1,560 |
Tax charge/(credit) excluded from underlying earnings |  |  |  |  | 596 |  |  | 155 |  |  | (567 | )
Tax charge per income statement |  |  |  |  | 3,965 |  |  | 1,567 |  |  | 993 |
Tax charge/(credit) excludes amounts relating to equity accounted units. Further information on the tax charge/(credit) excluded from underlying earnings is provided below in the section “Underlying earnings”.
|  |  |  |  | 2017 |  |  | 2016 |  |  | 2015 |
Underlying earnings (Refer overleaf) |  |  |  | US$m |  | US$m |  | US$m |
Iron Ore |  |  |  |  | 6,692 |  |  | 4,611 |  |  | 3,940 |
Aluminium |  |  |  |  | 1,583 |  |  | 947 |  |  | 1,118 |
Copper & Diamonds |  |  |  |  | 263 |  |  | (18 | ) |  | 370 |
Energy & Minerals |  |  |  |  | 1,242 |  |  | 612 |  |  | 177 |
Other Operations |  |  |  |  | (138 | ) |  | (88 | ) |  | (90 | )
Reportable segments total |  |  |  |  | 9,642 |  |  | 6,064 |  |  | 5,515 |
Other items |  |  |  |  | (483 | ) |  | (241 | ) |  | (375 | )
Exploration and evaluation not attributed to product groups |  |  |  |  | (178 | ) |  | (147 | ) |  | (211 | )
Net finance costs |  |  |  |  | (354 | ) |  | (576 | ) |  | (389 | )
Underlying earnings |  |  |  |  | 8,627 |  |  | 5,100 |  |  | 4,540 |
Items excluded from underlying earnings (Refer overleaf) |  |  |  |  | 135 |  |  | (483 | ) |  | (5,406 | )
Net earnings/(loss) attributable to owners of Rio Tinto per income statement |  |  |  |  | 8,762 |  |  | 4,617 |  |  | (866 | )
Underlying earnings is reported by Rio Tinto to provide greater understanding of the underlying business performance of its operations and to enhance comparability of reporting periods. The measure of underlying earnings, in conjunction with net cash generated from operating activities and capital expenditure (net of proceeds on disposals), is used by the chief executive of Rio Tinto to assess the performance of the product groups. Underlying earnings and net earnings/(loss) both represent amounts net of tax attributable to owners of Rio Tinto. The following items are excluded from net earnings/(loss) in arriving at underlying earnings in each period irrespective of materiality:
– | Net gains/(losses) on disposal of interests in businesses.
– | Impairment charges and reversals.
– | Profit/(loss) after tax from discontinued operations.
– | Exchange and derivative gains and losses. This exclusion includes exchange gains/(losses) on US dollar net debt and intragroup balances, gains/(losses) on currency and interest rate derivatives not qualifying for hedge accounting and gains/(losses) on embedded commodity derivatives not qualifying for hedge accounting.
In addition, there is a final judgmental category which includes, where applicable, other credits and charges that, individually or in aggregate if of a similar type, are of a nature or size to require exclusion in order to provide additional insight into underlying business performance. Product group earnings include earnings of subsidiaries and the Group’s share of the underlying earnings of equity accounted units stated before finance items but after the amortisation of discount on provisions. Rio Tinto’s share of the underlying earnings of equity accounted units amounted to US$332 million in 2017 (2016: US$309 million; 2015: US$390 million). This amount is attributable as follows: US$295 million profit to the Copper & Diamonds product group and US$37 million profit to other product groups (2016: US$272 million profit to the Copper & Diamonds product group and US$37 million profit to other product groups; 2015: US$307 million profit to the Copper & Diamonds product group and US$83 million profit to other product groups). These amounts are included in underlying earnings and include the underlying earnings of the Group’s tolling entities which process alumina. Tolling entities recharge the majority of their costs and generally have minimal earnings. Reconciliation of net earnings/(losses) to underlying earnings
| Pre-tax |  |  |  |  | Non- controlling |  | Net |  | Net |  | Net |
| (l) |  | Taxation |  | interests |  | amount |  | amount |  | amount |
|  | 2017 |  |  | 2017 |  |  | 2017 |  |  | 2017 |  |  | 2016 |  |  | 2015 |
Exclusions from underlying earnings | US$m |  | US$m |  | US$m |  | US$m |  | US$m |  | US$m |
Impairment charges (note 6) |  | (796 | ) |  | 141 |  |  | 174 |  |  | (481 | ) |  | (183 | ) |  | (1,802 | )
Net gains on disposal of interests in businesses (a) |  | 2,344 |  |  | (322 | ) |  | - |  |  | 2,022 |  |  | 382 |  |  | 48 |
Exchange and derivative (losses)/gains: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
– Exchange (losses)/gains on external US dollar net debt and |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
intragroup balances (b) |  | (613 | ) |  | 113 |  |  | 12 |  |  | (488 | ) |  | 516 |  |  | (3,282 | )
– Gain/(losses) on currency and interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
derivatives not qualifying for hedge accounting (c) |  | 33 |  |  | (5 | ) |  | 2 |  |  | 30 |  |  | (12 | ) |  | (88 | )
– (Losses)/gains on embedded commodity derivatives not |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
qualifying for hedge accounting (d) |  | (498 | ) |  | 146 |  |  | - |  |  | (352 | ) |  | 32 |  |  | 88 |
Changes in corporate tax rates in the US and France (e) |  | - |  |  | (439 | ) |  | - |  |  | (439 | ) |  | - |  |  | - |
Onerous port and rail contracts (f) |  | - |  |  | - |  |  | - |  |  | - |  |  | (329 | ) |  | - |
Restructuring costs and global headcount reductions |  | - |  |  | - |  |  | - |  |  | - |  |  | (177 | ) |  | (258 | )
Increased closure provision for non-operating and legacy operations (g) |  | - |  |  | - |  |  | - |  |  | - |  |  | (282 | ) |  | (233 | )
Rio Tinto Kennecott insurance settlement (h) |  | 73 |  |  | (28 | ) |  | - |  |  | 45 |  |  | - |  |  | 18 |
Tax provision (i) |  | - |  |  | - |  |  | - |  |  | - |  |  | (380 | ) |  | - |
Adjustment to deferred tax assets relating to expected divestments (j) |  | - |  |  | (202 | ) |  | - |  |  | (202 | ) |  | - |  |  | 234 |
Other exclusions (k) |  | - |  |  | - |  |  | - |  |  | - |  |  | (50 | ) |  | (131 | )
Total excluded from underlying earnings |  | 543 |  |  | (596 | ) |  | 188 |  |  | 135 |  |  | (483 | ) |  | (5,406 | )
Net earnings/(loss) |  | 12,816 |  |  | (3,965 | ) |  | (89 | ) |  | 8,762 |  |  | 4,617 |  |  | (866 | )
Underlying earnings |  | 12,273 |  |  | (3,369 | ) |  | (277 | ) |  | 8,627 |  |  | 5,100 |  |  | 4,540 |
(a) | Net gains on disposal of interests in businesses in 2017 relate mainly to the sale of Coal & Allied Industries Limited which completed on 1 September 2017.
In 2016, the net gain related mainly to the sale of Rio Tinto’s 40 per cent interest in the Bengalla Joint Venture on 1 March 2016 and the sale of the Lochaber assets in Scotland on 23 November 2016. This was partially offset by a loss on disposal of the 100 per cent interest in Carbone Savoie on 31 March 2016.
(b) | Exchange (losses)/gains on external US dollar net debt and intragroup balances comprise of post-tax foreign exchange gains on US dollar denominated net debt in non-US dollar functional currency companies of US$420 million and post-tax losses of US$908 million on intragroup balances.
Net exchange gains in 2016 comprise post-tax foreign exchange gains of US$123 million on external US dollar denominated net debt, and US$393 million gains on intragroup balances, mainly as the Canadian dollar strengthened against the US dollar.
(c) | Valuation changes on currency and interest rate derivatives, which are ineligible for hedge accounting, other than those embedded in commercial contracts, and the currency revaluation of embedded US dollar derivatives contained in contracts held by entities whose functional currency is not the US dollar.
(d) | Valuation changes on commodity derivatives, embedded in commercial contracts and other financial commodity derivatives, that are ineligible for hedge accounting, but for which there will be an offsetting change in future Group earnings.
(e) | Deferred tax assets have been re-measured to reflect lower corporate income tax rates in the US and France as a result of tax legislation changes substantively enacted in December 2017.
(f) | In 2016, a review of the infrastructure capacity requirements in Queensland, Australia confirmed that it was no longer likely that Rio Tinto would utilise the Abbot Point Coal Terminal and associated rail infrastructure capacity contracted under take or pay arrangements and agreement was reached with Adani, the owner of the port, to relinquish that capacity. Accordingly, an onerous contract provision was recognised based on the net present value of expected future cash flows for the port and rail capacity discounted at a post-tax real rate of two per cent, resulting in a post-tax onerous contract charge of US$329 million.
(g) | In 2016, the closure provision for non-operating and legacy operations increased mainly due to the Gove alumina refinery in Northern Territory, Australia where operations have been curtailed since May 2014. The provision was updated based on the cost estimates from the studies. Future revisions to the closure cost estimate during the study periods (including the next stage of feasibility study) will continue to be excluded from underlying earnings as the site operating assets have been fully impaired.
(h) | In 2017, Rio Tinto received the final settlement on the insurance claims related to the 2013 slide at Rio Tinto Kennecott’s Bingham Canyon mine. The amounts excluded from underlying earnings are consistent with the previous excluded loses to which they relate, in line with the treatment of the 2013 and 2015 settlement payments.
(i) | Tax provision includes amounts provided for specific tax matters for which the timing of resolution and potential economic outflow are uncertain. During 2016, provision was made in relation to matters under discussion with the Australian Taxation Office (ATO) in relation to the transfer pricing of certain transactions between Rio Tinto entities based in Australia and the Group’s commercial centre in Singapore for the period since 2009.
(j) | Deferred tax assets have been derecognised as a result of revised profit forecasts in France due to expected divestments.
(k) | Other credits and charges that, individually, or in aggregate if of similar type, are of a nature or size to require exclusion in order to provide additional insight into underlying business performance. In 2016, other exclusions included costs related to multiple transformation projects and the recuperation of capital losses against capital gains on divestment. In 2015, other exclusions included a provision relating to the incomplete divestment of Carbone Savoie within the Aluminium product group, divestment costs and an increase in provision relating to the Gove refinery.
(l) | Exclusions from underlying earnings relating to equity accounted units are stated after tax and are included in the column “Pre-tax”.
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Operating segments | Notes to the 2017 financial statements continued 3 Operating segments – additional information
|  |  |  | Adjusted (b) |  | Adjusted (b) |  |  |  |  | Adjusted (b) |  | Adjusted (b) |
|  | 2017 |  |  | 2016 |  |  | 2015 |  |  | 2017 |  |  | 2016 |  |  | 2015 |
Consolidated sales revenue by destination (a) | % |  | % |  | % |  | US$m |  | US$m |  | US$m |
China |  | 44.2 |  |  | 43.6 |  |  | 42.2 |  |  | 17,706 |  |  | 14,742 |  |  | 14,701 |
Asia (excluding China and Japan) |  | 12.8 |  |  | 13.9 |  |  | 12.9 |  |  | 5,108 |  |  | 4,692 |  |  | 4,499 |
United States of America |  | 14.3 |  |  | 13.9 |  |  | 15.3 |  |  | 5,716 |  |  | 4,709 |  |  | 5,321 |
Japan |  | 11.7 |  |  | 11.3 |  |  | 11.4 |  |  | 4,701 |  |  | 3,809 |  |  | 3,974 |
Europe (excluding UK) |  | 7.5 |  |  | 7.6 |  |  | 8.4 |  |  | 3,015 |  |  | 2,579 |  |  | 2,909 |
Canada |  | 2.8 |  |  | 3.0 |  |  | 3.8 |  |  | 1,111 |  |  | 1,024 |  |  | 1,322 |
Australia |  | 1.8 |  |  | 2.0 |  |  | 2.4 |  |  | 710 |  |  | 675 |  |  | 830 |
UK |  | 1.1 |  |  | 1.2 |  |  | 0.9 |  |  | 449 |  |  | 391 |  |  | 330 |
Other countries |  | 3.8 |  |  | 3.5 |  |  | 2.7 |  |  | 1,514 |  |  | 1,160 |  |  | 943 |
Consolidated sales revenue |  | 100.0 |  |  | 100.0 |  |  | 100.0 |  |  | 40,030 |  |  | 33,781 |  |  | 34,829 |
(a) | Consolidated sales revenue by geographical destination is based on the ultimate country of destination of the product, if known. If the eventual destination of the product sold through traders is not known then revenue is allocated to the location of the product at the time when the risks and rewards of ownership are transferred. Rio Tinto is domiciled in both the UK and Australia.
(b) | The 2016 and 2015 comparatives above have been amended to correct the allocation of revenues by region. The most significant impacts are an increase in the amounts allocated to China (2016: US$337 million; 2015: US$135 million) and Canada (2015: US$155 million) and a decrease in amounts allocated to Asia (excluding China and Japan) (2016: US$319 million; 2015: US$263 million). There is no impact on the total consolidated sales revenue.
Consolidated sales revenue by product Consolidated sales revenues of the Group are derived from the following products sold to external customers:
|  |  |  |  | 2017 |  |  | 2016 |  |  | 2015 |
|  |  |  | US$m |  | US$m |  | US$m |
Iron ore |  |  |  |  | 20,010 |  |  | 15,855 |  |  | 15,239 |
Aluminium |  |  |  |  | 10,864 |  |  | 9,342 |  |  | 9,904 |
Copper |  |  |  |  | 1,760 |  |  | 1,609 |  |  | 1,577 |
Coal |  |  |  |  | 2,822 |  |  | 2,567 |  |  | 2,703 |
Industrial minerals |  |  |  |  | 2,060 |  |  | 1,954 |  |  | 2,155 |
Gold |  |  |  |  | 378 |  |  | 608 |  |  | 1,063 |
Diamonds |  |  |  |  | 706 |  |  | 613 |  |  | 698 |
Other |  |  |  |  | 1,430 |  |  | 1,233 |  |  | 1,490 |
Consolidated sales revenue |  |  |  |  | 40,030 |  |  | 33,781 |  |  | 34,829 |
Non-current assets other than excluded items The total of non-current assets other than items excluded is shown by location below. This is allocated based on the location of the business units holding the assets.
|  |  |  |  |  | 2017 |  |  | 2016 |
Non-current assets other than excluded items (a) |  |  |  |  | US$m |  | US$m |
Australia |  |  |  |  |  | 32,890 |  |  | 30,602 |
Canada |  |  |  |  |  | 14,640 |  |  | 14,362 |
Mongolia |  |  |  |  |  | 8,582 |  |  | 7,743 |
United States of America |  |  |  |  |  | 4,812 |  |  | 4,958 |
Africa |  |  |  |  |  | 3,781 |  |  | 3,882 |
South America |  |  |  |  |  | 3,304 |  |  | 3,785 |
Indonesia |  |  |  |  |  | 1,458 |  |  | 1,482 |
Europe (excluding France and the UK) |  |  |  |  |  | 362 |  |  | 429 |
UK |  |  |  |  |  | 66 |  |  | 66 |
France |  |  |  |  |  | 276 |  |  | 251 |
Other countries |  |  |  |  |  | 892 |  |  | 891 |
|  |  |  |  |  | 71,063 |  |  | 68,451 |
Non-current assets excluded from analysis above: |  |  |  |  |  |  |  |  |  |
Deferred tax assets |  |  |  |  |  | 3,395 |  |  | 3,728 |
Other financial assets (including loans to equity accounted units) |  |  |  |  |  | 510 |  |  | 822 |
Quasi equity loans to equity accounted units (b) |  |  |  |  |  | 159 |  |  | 163 |
Tax recoverable |  |  |  |  |  | 30 |  |  | 38 |
Trade and other receivables |  |  |  |  |  | 1,397 |  |  | 975 |
Total non-current assets per balance sheet |  |  |  |  |  | 76,554 |  |  | 74,177 |
(a) | Allocation of non-current assets by country is based on the location of the business units holding the assets. It includes investments in equity accounted units totalling US$4,327 million (2016: US$4,856 million) which represents the Group’s share of net assets excluding quasi equity loans shown separately within “Loans to equity accounted units” above.
(b) | Loans to equity accounted units comprise quasi equity loans of US$159 million (2016: US$163 million) included in “Investments in equity accounted units” on the face of the balance sheet and non-current non-quasi equity loans of US$39 million (2016: US$39 million) shown within “Other financial assets”.

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