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Earnings Per Share - Summary of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Jun. 30, 2019
Earnings attributable to BHP shareholders |  |  |  |
Continuing operations |  | $ 4,868 | $ 4,064 | $ 8,648
Total |  | $ 4,868 | $ 3,764 | $ 8,306
Weighted average number of shares |  |  |  |
Basic | [1] | 5,057 | 5,303 | 5,180
Diluted | [2] | 5,070 | 5,318 | 5,193
Basic earnings per ordinary share |  |  |  |
Continuing operations | [3] | $ 0.963 | $ 0.766 | $ 1.669
Total | [3] | 0.963 | 0.710 | 1.603
Diluted earnings per ordinary share |  |  |  |
Continuing operations | [3] | 0.960 | 0.764 | 1.665
Total | [3] | $ 0.960 | $ 0.708 | $ 1.599
[1] | The calculation of the number of ordinary shares used in the computation of basic earnings per share is the aggregate of the weighted average number of ordinary shares of BHP Group Limited and BHP Group Plc outstanding during the period after deduction of the number of shares held by the Billiton Employee Share Ownership Plan Trust and the BHP Billiton Limited Employee Equity Trust.
[2] | For the purposes of calculating diluted earnings per share, the effect of 13 million of dilutive shares has been taken into account for the half year ended 31 December 2019 (31 December 2018: 15 million shares; 30 June 2019: 13 million shares). The Group’s only potential dilutive ordinary shares are share awards granted under employee share ownership plans. Diluted earnings per share calculation excludes instruments which are considered antidilutive.
[3] | Each American Depositary Share represents twice the earnings for BHP ordinary shares.

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- Definition The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2019-01-01 -Paragraph 70 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2019-en-r&anchor=para_70_b&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2019-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2019-en-r&anchor=para_66&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition Basic earnings (loss) per share from continuing operations. [Refer: Basic earnings (loss) per share; Continuing operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2019-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2019-en-r&anchor=para_66&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2019-01-01 -Paragraph 66 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=33&code=ifrs-tx-2019-en-r&anchor=para_66&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 81B -Subparagraph a -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_81B_a_ii&doctype=Standard -URIDate 2019-03-27 + Details
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