XML 224 R156.htm IDEA: XBRL DOCUMENT v3.8.0.1

NON-CONTROLLING INTERESTS - Activity (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Disclosure of subsidiaries [line items]
Non-controlling interests, beginning balance	$ 2,378
Share of income (loss)	78	$ 206
Cash contributed	13	70
Decrease in non-controlling interest	493
Disbursements	(195)	(175)
Non-controlling interests, ending balance	1,781	2,378
Subsidiaries
Disclosure of subsidiaries [line items]
Non-controlling interests, beginning balance	2,378	2,277
Share of income (loss)	78	206
Cash contributed	13	70
Decrease in non-controlling interest	(493)
Disbursements	(195)	(175)
Non-controlling interests, ending balance	$ 1,781	2,378
Pueblo Viejo
Disclosure of subsidiaries [line items]
Proportion of ownership interests held by non-controlling interests	40.00%
Non-controlling interests, beginning balance	$ 1,311	1,232
Share of income (loss)	118	174
Cash contributed	0	0
Decrease in non-controlling interest	0
Disbursements	(139)	(95)
Non-controlling interests, ending balance	$ 1,290	1,311
Acacia
Disclosure of subsidiaries [line items]
Proportion of ownership interests held by non-controlling interests	36.10%
Non-controlling interests, beginning balance	$ 704	677
Share of income (loss)	(211)	34
Cash contributed	0	0
Decrease in non-controlling interest	0
Disbursements	(13)	(7)
Non-controlling interests, ending balance	$ 480	704
Cerro Casale
Disclosure of subsidiaries [line items]
Proportion of ownership interests held by non-controlling interests	25.00%
Non-controlling interests, beginning balance	$ 319	318
Share of income (loss)	173	(1)
Cash contributed	1	2
Decrease in non-controlling interest	(493)
Disbursements	0	0
Non-controlling interests, ending balance	0	319
Other
Disclosure of subsidiaries [line items]
Non-controlling interests, beginning balance	44	50
Share of income (loss)	(2)	(1)
Cash contributed	12	68
Decrease in non-controlling interest	0
Disbursements	(43)	(73)
Non-controlling interests, ending balance	$ 11	$ 44

X

- Definition

Decrease through disbursements to non-controlling interests

+ References

No definition available.

+ Details

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

X

- Definition

Divestiture, Consideration, Payments of Development Project Expenditures

+ References

No definition available.

+ Details

Name:	abx_DivestitureConsiderationPaymentsofDevelopmentProjectExpenditures
Namespace Prefix:	abx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Increase from funding from non-controlling interests

+ References

No definition available.

+ Details

Name:	abx_IncreasefromFundingfromNonControllingInterests
Namespace Prefix:	abx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of equity in a subsidiary not attributable, directly or indirectly, to a parent. [Refer: Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 12
-Subparagraph f
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_12_f&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 54
-Subparagraph q
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_q&doctype=Standard
-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 10
-IssueDate 2017-01-01
-Paragraph 22
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=10&date=2017-03-01&anchor=para_22&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_NoncontrollingInterests
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The profit (loss) attributable to non-controlling interests. [Refer: Profit (loss); Non-controlling interests]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 12
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_12_e&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 81B
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_81B_a_i&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ProfitLossAttributableToNoncontrollingInterests
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The proportion of ownership interests in a subsidiary held by non-controlling interests. [Refer: Subsidiaries [member]; Non-controlling interests]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 12
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_12_c&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=ifrs-full_SubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=abx_PuebloViejoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=abx_AcaciaMiningPLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=abx_CerroCasaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=abx_OtherSubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: