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Discontinued Operations - Summary of Income Statement - Discontinued Operations (Detail) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Discontinued Operations [abstract] |  |  |
Revenue | $ 2,171 | $ 2,150 | $ 2,345
Other income | 34 | 74 | 12
Expenses excluding net finance costs | (5,790) | (3,025) | (11,396)
Loss from operations | (3,585) | (801) | (9,039)
Financial expenses | (22) | (14) | (11)
Net finance costs | (22) | (14) | (11)
Loss before taxation | (3,607) | (815) | (9,050)
Income tax benefit | 686 | 343 | 3,155
Loss after taxation | (2,921) | (472) | (5,895)
Attributable to non-controlling interests | 26 | 13 | (49)
Attributable to BHP shareholders | $ (2,947) | $ (485) | $ (5,846)
Basic loss per ordinary share (cents) | $ (0.554) | $ (0.091) | $ (1.098)
Diluted loss per ordinary share (cents) | $ (0.554) | $ (0.091) | $ (1.098)

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- Definition Basic earnings (loss) per share from discontinued operations. [Refer: Basic earnings (loss) per share; Discontinued operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2017-01-01 -Paragraph 68 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=33&date=2017-03-01&anchor=para_68&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The profit (loss) before tax of discontinued operations. [Refer: Discontinued operations [member]; Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2017-01-01 -Paragraph 33 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=5&date=2017-03-01&anchor=para_33_b_i&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The profit (loss) from discontinued operations. [Refer: Discontinued operations [member]; Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2017-01-01 -Paragraph 33 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=5&date=2017-03-01&anchor=para_33_a&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2017-01-01 -Paragraph B12 -Subparagraph b -Clause vii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_B12_b_vii&doctype=Appendix&seq=2 -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 82 -Subparagraph ea -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_82_ea&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The profit (loss) from discontinued operations attributable to non-controlling interests. [Refer: Profit (loss) from discontinued operations; Non-controlling interests] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 5 -IssueDate 2017-01-01 -Section Example 11 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=5&date=2017-03-01&anchor=sect_Example11&doctype=Implementation%20Guidance -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 5 -IssueDate 2017-01-01 -Paragraph 33 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=5&date=2017-03-01&anchor=para_33_d&doctype=Standard -URIDate 2017-03-09 + Details
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