XML 140 R122.htm IDEA: XBRL DOCUMENT v3.8.0.1

27. INTEREST IN OTHER ENTITIES (Details)

12 Months Ended

Dec. 31, 2017

Dec. 31, 2016

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Ownership interest, associates

18.72%

20.68%

Waterbury Lake Uranium Corp

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, joint operations

Canada

Entity type

^[1]

JO-1

Ownership interest, joint operations

^[2]

60.00%

Participating interest

^[3]

100.00%

Accounting method

^[4]

Voting Share

Waterbury Lake Uranium LP

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, joint operations

Canada

Entity type

^[1]

JO-1

Ownership interest, joint operations

^[2]

64.22%

Participating interest

^[3]

100.00%

Accounting method

^[4]

Voting Share

McClean Joint Venture Agreement

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, joint operations

Canada

Entity type

^[1]

JO-2

Ownership interest, joint operations

^[2]

22.50%

Participating interest

^[3]

22.50%

Accounting method

^[4]

Proportionate Share

Midwest Joint Venture Agreement

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, joint operations

Canada

Entity type

^[1]

JO-2

Ownership interest, joint operations

^[2]

25.17%

Participating interest

^[3]

25.17%

Accounting method

^[4]

Proportionate Share

Wheeler River

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, joint operations

Canada

Entity type

^[1]

JO-2

Ownership interest, joint operations

^[2]

63.30%

Participating interest

^[3]

75.00%

Accounting method

^[4]

Proportionate Share

Mann Lake

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, joint operations

Canada

Entity type

^[1]

JO-2

Ownership interest, joint operations

^[2]

30.00%

Participating interest

^[3]

30.00%

Accounting method

^[4]

Proportionate Share

Wolly

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, joint operations

Canada

Entity type

^[1]

JO-2

Ownership interest, joint operations

^[2]

21.89%

Participating interest

^[3]

0.00%

Accounting method

^[4]

Proportionate Share

GoviEx Uranium Inc.

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, associates

Africa

Ownership interest, associates

^[2]

18.72%

Accounting method

^[4]

Equity Method

Denison Mines Inc.

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, subsidiaries

Canada

Ownership interest, subsidiaries

^[2]

100.00%

Accounting method

^[4]

Consolidation

Denison AB Holdings Corp.

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, subsidiaries

Canada

Ownership interest, subsidiaries

^[2]

100.00%

Accounting method

^[4]

Consolidation

Denison Waterbury Corp

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, subsidiaries

Canada

Ownership interest, subsidiaries

^[2]

100.00%

Accounting method

^[4]

Consolidation

9373721 Canada Inc.

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, subsidiaries

Canada

Ownership interest, subsidiaries

^[2]

100.00%

Accounting method

^[4]

Consolidation

Denison Mines (Bermuda) I Ltd

DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems [Line Items]

Place of business, subsidiaries

Bermuda

Ownership interest, subsidiaries

^[2]

100.00%

Accounting method

^[4]

Consolidation

[1]	Joint operations are further subdivided into the following two entity types: JO-1=Joint Operations having joint control as defined by IFRS 11; and JO-2=Joint Operations not having joint control and beyond the scope of IFRS 11
[2]	Ownership Interest represents Denison's percentage ownership / voting interest in the entity or contractual arrangement
[3]	Participating interest represents Denison's percentage funding contribution to the particular joint operation arrangement. This percentage can differ from voting interest in instances where other parties to the arrangement have carried interests in the arrangement and / or are earning-in or diluting their voting interest in the arrangement
[4]	Voting share or proportionate share is where Denison accounts for its share of assets, liabilities, revenues and expenses of the arrangement in relation to its voting interest or participating interest, respectively

X

- References

No definition available.

+ Details

Name:	DNN_AccountingMethod
Namespace Prefix:	DNN_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	DNN_DisclosureOfSignificantInvestmentsInSubsidiariesAssociatesAndJointVenturesLineItems
Namespace Prefix:	DNN_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	DNN_EntityType
Namespace Prefix:	DNN_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	DNN_ParticipatingInterest
Namespace Prefix:	DNN_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The principal place of business of an associate. [Refer: Principal place of business; Associates [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2016-01-13
-Paragraph 16
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2016-03-30&anchor=para_16_b_ii&doctype=Standard
-URIDate 2016-03-31

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2016-01-13
-Paragraph 17
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2016-03-30&anchor=para_17_b_ii&doctype=Standard
-URIDate 2016-03-31

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2016-01-13
-Paragraph 21
-Subparagraph a
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2016-03-30&anchor=para_21_a_iii&doctype=Standard
-URIDate 2016-03-31

+ Details

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

X

- Definition

The principal place of business of a joint operation. [Refer: Joint operations [member]; Principal place of business]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2016-01-13
-Paragraph 21
-Subparagraph a
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2016-03-30&anchor=para_21_a_iii&doctype=Standard
-URIDate 2016-03-31

+ Details

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

X

- Definition

The principal place of business of a subsidiary. [Refer: Principal place of business; Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2016-01-13
-Paragraph 16
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2016-03-30&anchor=para_16_b_ii&doctype=Standard
-URIDate 2016-03-31

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2016-01-13
-Paragraph 17
-Subparagraph b
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2016-03-30&anchor=para_17_b_ii&doctype=Standard
-URIDate 2016-03-31

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2016-01-13
-Paragraph 12
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2016-03-30&anchor=para_12_b&doctype=Standard
-URIDate 2016-03-31

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2016-01-13
-Paragraph 19B
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2016-03-30&anchor=para_19B_b&doctype=Standard
-URIDate 2016-03-31

+ Details

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

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2016-01-13
-Paragraph 17
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2016-03-30&anchor=para_17_b_iii&doctype=Standard
-URIDate 2016-03-31

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2016-01-13
-Paragraph 16
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2016-03-30&anchor=para_16_b_iii&doctype=Standard
-URIDate 2016-03-31

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2016-01-13
-Paragraph 21
-Subparagraph a
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2016-03-30&anchor=para_21_a_iv&doctype=Standard
-URIDate 2016-03-31

+ Details

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

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2016-01-13
-Paragraph 21
-Subparagraph a
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2016-03-30&anchor=para_21_a_iv&doctype=Standard
-URIDate 2016-03-31

+ Details

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

X

- Definition

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 2016-01-13
-Paragraph 17
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2016-03-30&anchor=para_17_b_iii&doctype=Standard
-URIDate 2016-03-31

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2016-01-13
-Paragraph 16
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2016-03-30&anchor=para_16_b_iii&doctype=Standard
-URIDate 2016-03-31

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2016-01-13
-Paragraph 19B
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2016-03-30&anchor=para_19B_c&doctype=Standard
-URIDate 2016-03-31

+ Details

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

X

- Details

Name:	ifrs-full_JointOperationsAxis=DNN_WaterburyLakeUraniumCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointOperationsAxis=DNN_WaterburyLakeUraniumLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointOperationsAxis=DNN_McCleanJointVentureAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointOperationsAxis=DNN_MidwestJointVentureAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointOperationsAxis=DNN_WheelerRiverMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointOperationsAxis=DNN_MannLakeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointOperationsAxis=DNN_WollyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_SignificantInvestmentsInAssociatesAxis=DNN_GoviexUraniumIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

Name:	ifrs-full_SignificantInvestmentsInSubsidiariesAxis=DNN_CanadaInc9373721Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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