Name:	ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
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Period Type:	duration

The commencement date of exercise of options in a share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	kgc_CommencementPeriodForExerciseOfOptionsInShareBasedPaymentArrangement
Namespace Prefix:	kgc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The contractual life of awards in a share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	kgc_ContractualLifeOfShareBasedAwards
Namespace Prefix:	kgc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Maximum percentage of shares that may be issued in accordance with the plan as a proportion of outstanding total number of common shares.

No definition available.

Name:	kgc_PercentageOfAggregateNumberOfCommonSharesReservedForIssuanceInShareBasedPaymentArrangement
Namespace Prefix:	kgc_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

The ratio of options granted that are exercisable by the option holder in share based payment arrangement.

No definition available.

Name:	kgc_RatioOfExercisableOptionsGrantedInShareBasedPaymentArrangement
Namespace Prefix:	kgc_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901