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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Earnings per share [abstract] |  |
Net income | $ 3,614 | $ 4,574
Net income attributable to non-controlling interests | (1,290) | (605)
Net income attributable to equity holders of Barrick Gold Corporation - Basic | 2,324 | 3,969
Net income attributable to equity holders of Barrick Gold Corporation - Diluted | $ 2,324 | $ 3,969
Weighted average shares outstanding - Basic (in shares) | 1,778 | 1,758
Weighted average shares outstanding - Diluted (in shares) | 1,778 | 1,758
Basic earnings per share data attributable to the equity holders of Barrick Gold Corporation (in USD per share) | $ 1.31 | $ 2.26
Diluted earnings per share data attributable to the equity holders of Barrick Gold Corporation (in USD per share) | $ 1.31 | $ 2.26

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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), 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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