SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Principles of consolidation (Details)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Sociedad Contractual Minera Puren
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in joint venture	65.00%	65.00%
Bald Mountain Exploration LLC
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in joint venture	50.00%	50.00%
Compania Minera Casale
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Percentage of ownership interest in associate		25.00%
Fairbanks Gold Mining, Inc.
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary	100.00%	100.00%
Kinross Brasil Mineracao S.A. ("KBM")
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary	100.00%	100.00%
Compania Minera Maricunga
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary	100.00%	100.00%
Compania Minera Mantos de Oro
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary	100.00%	100.00%
Echo Bay Minerals Company
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary	100.00%	100.00%
Chukotka Mining and Geological
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary	100.00%	100.00%
Northern Gold LLC
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary	100.00%	100.00%
Selene Holdings LP
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary		100.00%
Tasiast Mauritanie Ltd. S.A.
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary	100.00%	100.00%
Chirano Gold Mines Ltd. (Ghana)
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary	90.00%	90.00%
Ownership interest non controlling interest	10.00%	10.00%
KG Mining (Bald Mountain) Inc.
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary	100.00%	100.00%
Round Mountain Gold Corporation/KG Mining (Round Mountain) Inc.
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Ownership interest in subsidiary	100.00%	100.00%

The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2017-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_17_b_iii&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2017-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_16_b_iii&doctype=Standard
-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 21
-Subparagraph a
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_21_a_iv&doctype=Standard
-URIDate 2017-03-09

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The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Joint ventures [member]]

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The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2017-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_17_b_iii&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2017-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_16_b_iii&doctype=Standard
-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 19B
-Subparagraph c
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The proportion of ownership interests in a subsidiary held by non-controlling interests. [Refer: Subsidiaries [member]; Non-controlling interests]

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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
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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.

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No definition available.

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