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Significant Events - Summary of Financial Impacts of Samarco Dam Failure (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Income statement |  |  |
Other income | $ 777 | $ 393 | $ 247
Expenses excluding net finance costs: |  |  |
Costs incurred directly by BHP Brasil and other BHP entities in relation to the Samarco dam failure | (28,775) | (28,022) | (27,527)
Loss from equity accounted investments, related impairments and expenses: |  |  |
Samarco impairment expense | (494) | (264) | (333)
Profit/(loss) from operations | (1,453) | (952) | (566)
Net finance costs | (911) | (1,064) | (1,245)
Loss before taxation | (1,546) | (1,060) | (650)
Income tax benefit | 241 | 242 | (2,320)
Loss after taxation | (1,305) | (818) | (2,970)
Balance sheet movement |  |  |
Trade and other payables | 755 | (406) | (719)
Cash flow statement |  |  |
Loss before taxation | (1,546) | (1,060) | (650)
Adjustments for: |  |  |
Samarco impairment expense | 494 | 264 | 333
Net finance costs | 911 | 1,064 | 1,245
Changes in assets and liabilities: |  |  |
Trade and other payables | (755) | 406 | 719
Net operating cash flows | 15,706 | 17,871 | 18,461
Net investing cash flows | (7,616) | 2,607 | (5,921)
Net decrease in cash and cash equivalents | (1,662) | (10,495) | 1,650
Samarco dam failure [member] |  |  |
Income statement |  |  |
Other income | 489 | 50 |
Expenses excluding net finance costs: |  |  |
Costs incurred directly by BHP Brasil and other BHP entities in relation to the Samarco dam failure | (64) | (57) | (57)
Loss from equity accounted investments, related impairments and expenses: |  |  |
Samarco impairment expense | (95) | (96) | (80)
Samarco Germano dam decommissioning | 46 | (263) |
Samarco dam failure provision | (459) | (586) | (429)
Profit/(loss) from operations | (83) | (952) | (566)
Net finance costs | (93) | (108) | (84)
Loss before taxation | (176) | (1,060) | (650)
Income tax benefit | 0 | 0 | 0
Loss after taxation | (176) | (1,060) | (650)
Balance sheet movement |  |  |
Trade and other payables | (5) | 4 | 4
Provisions | (137) | (629) | (228)
Net liabilities | (142) | (625) | (224)
Cash flow statement |  |  |
Loss before taxation | (176) | (1,060) | (650)
Adjustments for: |  |  |
Samarco impairment expense | 95 | 96 | 80
Samarco Germano dam decommissioning | (46) | 263 |
Samarco dam failure provision | 459 | 586 | 429
Net finance costs | 93 | 108 | 84
Changes in assets and liabilities: |  |  |
Trade and other payables | 5 | (4) | (4)
Net operating cash flows | 430 | (11) | (61)
Net investment and funding of equity accounted investments | (464) | (424) | (365)
Net investing cash flows | (464) | (424) | (365)
Net decrease in cash and cash equivalents | $ (34) | $ (435) | $ (426)

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