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Consolidated Statements of Cash Flow (Parentheticals) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of cash flows [abstract]
Income taxes payable settled against VAT receivables	$ 57	$ 45	$ 93	$ 69

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- Definition

Income taxes payable settled against VAT receivables

+ References

No definition available.

+ Details

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Namespace Prefix:	abx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration