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Significant events - Samarco dam failure (Tables) - Samarco dam failure [member] | 6 Months Ended
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Dec. 31, 2018
Statement [LineItems] |
Summary of Financial Impacts of Samarco Dam Failure | The financial impacts of the Samarco dam failure on the Group’s income statement, balance sheet and cash flow statement for the half year ended 31 December 2018 are shown below and have been treated as an exceptional item.
Financial impacts of Samarco dam failure |  | Half year ended 31 Dec 2018 US$M |  |  | Half year ended 31 Dec 2017 US$M |  |  | Year ended 30 June 2018 US$M |
Income statement |  |  |  |  |  |  |  |  |  |  |  |
Expenses excluding net finance costs: |  |  |  |  |  |  |  |  |  |  |  |
Costs incurred directly by BHP Billiton Brasil and other BHP entities in relation to the Samarco dam failure(1) |  |  | (33 | ) |  |  | (29 | ) |  |  | (57 | )
Loss from equity accounted investments, related impairments and expenses: |  |  |  |  |  |  |  |  |  |  |  |
Share of loss relating to the Samarco dam failure(2) |  |  | (47 | ) |  |  | (50 | ) |  |  | (80 | )
Samarco dam failure provision(3) |  |  | (70 | ) |  |  | (87 | ) |  |  | (429 | )
Loss from operations |  |  | (150 | ) |  |  | (166 | ) |  |  | (566 | )
Net finance costs(4) |  |  | (60 | ) |  |  | (44 | ) |  |  | (84 | )
Loss before taxation |  |  | (210 | ) |  |  | (210 | ) |  |  | (650 | )
Income tax benefit |  |  | – |  |  |  | – |  |  |  | – |
Loss after taxation |  |  | (210 | ) |  |  | (210 | ) |  |  | (650 | )
Balance sheet movement |  |  |  |  |  |  |  |  |  |  |  |
Trade and other payables |  |  | 2 |  |  |  | (2 | ) |  |  | 4 |
Provisions |  |  | 38 |  |  |  | 25 |  |  |  | (228 | )
Net assets/(liabilities) |  |  | 40 |  |  |  | 23 |  |  |  | (224 | )
|  | Half year ended 31 Dec 2018 US$M |  |  | Half year ended 31 Dec 2017 US$M |  |  | Year ended 30 June 2018 US$M |
Cash flow statement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss before taxation |  |  |  |  |  |  | (210 | ) |  |  |  |  |  |  | (210 | ) |  |  |  |  |  |  | (650 | )
Adjustments for: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share of loss relating to the Samarco dam failure(2) |  |  | 47 |  |  |  |  |  |  |  | 50 |  |  |  |  |  |  |  | 80 |  |  |  |  |
Samarco dam failure provision(3) |  |  | 70 |  |  |  |  |  |  |  | 87 |  |  |  |  |  |  |  | 429 |  |  |  |  |
Net finance costs(4) |  |  | 60 |  |  |  |  |  |  |  | 44 |  |  |  |  |  |  |  | 84 |  |  |  |  |
Changes in assets and liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade and other payables |  |  | (2 | ) |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  | (4 | ) |  |  |  |
Net operating cash flows |  |  |  |  |  |  | (35 | ) |  |  |  |  |  |  | (27 | ) |  |  |  |  |  |  | (61 | )
Net investment and funding of equity accounted investments(5) |  |  |  |  |  |  | (215 | ) |  |  |  |  |  |  | (206 | ) |  |  |  |  |  |  | (365 | )
Net investing cash flows |  |  |  |  |  |  | (215 | ) |  |  |  |  |  |  | (206 | ) |  |  |  |  |  |  | (365 | )
Net decrease in cash and cash equivalents |  |  |  |  |  |  | (250 | ) |  |  |  |  |  |  | (233 | ) |  |  |  |  |  |  | (426 | )
(1) | Includes legal and advisor costs incurred.
(2) | Loss from working capital funding provided during the period.
(3) | US$(76) million change in estimate and US$6 million exchange translation.
(4) | Amortisation of discounting of provision.
(5) | Includes US$(47) million funding provided during the period and US$(168) million utilisation of the Samarco dam failure provision, of which US$(164) million allowed for the continuation of reparatory and compensatory programs in relation to the Framework Agreement and a further US$(4) million for dam stabilisation and expert costs.
Summary of Provisions | Provision for Samarco dam failure
|  |  |  |  | 31 Dec 2018 US$M |  |  |  |  |  | 30 June 2018 US$M |
At the beginning of the reporting period |  |  |  |  |  |  | 1,285 |  |  |  |  |  |  |  | 1,057 |
Movement in provision |  |  |  |  |  |  | (38 | ) |  |  |  |  |  |  | 228 |
Comprising: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Utilised |  |  | (168 | ) |  |  |  |  |  |  | (285 | ) |  |  |  |
Adjustments charged to the income statement: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in estimate |  |  | 76 |  |  |  |  |  |  |  | 560 |  |  |  |  |
Amortisation of discounting impacting net finance costs |  |  | 60 |  |  |  |  |  |  |  | 84 |  |  |  |  |
Exchange translation |  |  | (6 | ) |  |  |  |  |  |  | (131 | ) |  |  |  |
At the end of the reporting period |  |  |  |  |  |  | 1,247 |  |  |  |  |  |  |  | 1,285 |
Comprising: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  | 308 |  |  |  |  |  |  |  | 313 |
Non-current |  |  |  |  |  |  | 939 |  |  |  |  |  |  |  | 972 |
At the end of the reporting period |  |  |  |  |  |  | 1,247 |  |  |  |  |  |  |  | 1,285 |

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