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Deed of Cross Guarantee - Summary of Consolidated Balance Sheet (Detail) - USD ($) $ in Millions | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
--- | --- | --- | --- | ---
Current assets |  |  |  |
Cash and cash equivalents | $ 15,871 | $ 14,153 | $ 10,319 |
Trade and other receivables | 3,096 | 2,836 |  |
Inventories | 3,764 | 3,673 |  |
Total current assets | 35,130 | 21,056 |  |
Non-current assets |  |  |  |
Trade and other receivables | 180 | 803 |  |
Inventories | 1,141 | 1,095 |  |
Property, plant and equipment | 67,182 | 80,497 | 83,975 |
Intangible assets | 778 | 3,968 | 4,119 |
Deferred tax assets | 4,041 | 5,788 |  |
Total non-current assets | 76,863 | 95,950 | 101,239 |
Total assets | 111,993 | 117,006 | 118,953 |
Current liabilities |  |  |  |
Trade and other payables | 5,977 | 5,551 |  |
Interest bearing liabilities | 2,736 | 1,241 |  |
Current tax payable | 1,773 | 2,119 |  |
Provisions | 2,025 | 1,959 |  |
Deferred income | 118 | 102 |  |
Total current liabilities | 13,989 | 11,366 |  |
Non-current liabilities |  |  |  |
Trade and other payables | 3 | 5 |  |
Interest bearing liabilities | 24,069 | 29,233 |  |
Deferred tax liabilities | 3,472 | 3,765 |  |
Provisions | 8,223 | 8,445 |  |
Deferred income | 337 | 360 |  |
Total non-current liabilities | 37,334 | 42,914 |  |
Total liabilities | 51,323 | 54,280 | 58,882 |
Net assets | 60,670 | 62,726 |  |
EQUITY |  |  |  |
Treasury shares | (5) | (3) |  |
Reserves | 2,290 | 2,400 | 2,538 |
Retained earnings | 51,064 | 52,618 |  |
Total equity | 60,670 | 62,726 | 60,071 | $ 70,545
BHP Billiton Limited [Member] |  |  |  |
EQUITY |  |  |  |
Share capital - BHP Billiton Limited | 1,186 | 1,186 |  |
Deed of Cross Guarantee [member] |  |  |  |
Current assets |  |  |  |
Cash and cash equivalents | 2 | 1 |  |
Trade and other receivables | 3,977 | 3,541 |  |
Loans to related parties | 16,730 | 14,081 |  |
Inventories | 1,649 | 1,536 |  |
Other | 90 | 72 |  |
Total current assets | 22,448 | 19,231 |  |
Non-current assets |  |  |  |
Trade and other receivables | 73 | 76 |  |
Loans to related parties | 151 | 335 |  |
Inventories | 323 | 278 |  |
Property, plant and equipment | 31,009 | 30,579 |  |
Intangible assets | 444 | 550 |  |
Investments in Group companies | 27,354 | 27,816 |  |
Deferred tax assets | 329 | 402 |  |
Other | 68 | 59 |  |
Total non-current assets | 59,751 | 60,095 |  |
Total assets | 82,199 | 79,326 |  |
Current liabilities |  |  |  |
Trade and other payables | 3,425 | 2,762 |  |
Loans from related parties | 15,719 | 15,978 |  |
Interest bearing liabilities | 115 | 202 |  |
Current tax payable | 1,053 | 1,318 |  |
Provisions | 952 | 683 |  |
Deferred income | 6 | 8 |  |
Total current liabilities | 21,270 | 20,951 |  |
Non-current liabilities |  |  |  |
Trade and other payables | 3 | 3 |  |
Loans from related parties | 7,870 | 7,660 |  |
Interest bearing liabilities | 191 | 251 |  |
Deferred tax liabilities | 573 | 613 |  |
Provisions | 2,475 | 2,479 |  |
Deferred income | 18 | 21 |  |
Total non-current liabilities | 11,130 | 11,027 |  |
Total liabilities | 32,400 | 31,978 |  |
Net assets | 49,799 | 47,348 |  |
EQUITY |  |  |  |
Treasury shares | (5) | (1) |  |
Reserves | 176 | 184 |  |
Retained earnings | 48,442 | 45,979 | $ 40,462 |
Total equity | 49,799 | 47,348 |  |
Deed of Cross Guarantee [member] | BHP Billiton Limited [Member] |  |  |  |
EQUITY |  |  |  |
Share capital - BHP Billiton Limited | $ 1,186 | $ 1,186 |  |

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