XML 187 R75.htm IDEA: XBRL DOCUMENT
v3.22.1

Non-current derivative financial liabilities - Change in stream obligation (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Disclosure of detailed information about financial instruments [line items] |  |
Balance, beginning of period | $ 654.0 | $ 164.5
Proceeds received |  | 300.0
Settlements during the period | (31.6) | (24.1)
Fair value adjustments related to changes in the Company’s own credit risk | (23.9) | 103.2
Other fair value adjustments | 62.9 | 110.4
Balance, end of period | 661.4 | 654.0
Less: current portion | (43.0) | (36.6)
Non-current portion of derivative financial liabilities | 618.4 | 617.4
Rainy River |  |
Disclosure of detailed information about financial instruments [line items] |  |
Balance, beginning of period | 217.9 | 164.5
Proceeds received |  | 0.0
Settlements during the period | (26.8) | (24.1)
Fair value adjustments related to changes in the Company’s own credit risk | (4.0) | 19.2
Other fair value adjustments | 6.9 | 58.3
Balance, end of period | 194.0 | 217.9
Less: current portion | (30.3) | (32.1)
Non-current portion of derivative financial liabilities | 163.7 | 185.8
New Afton |  |
Disclosure of detailed information about financial instruments [line items] |  |
Balance, beginning of period | 436.1 | 0.0
Proceeds received |  | 300.0
Settlements during the period | (4.8) | 0.0
Fair value adjustments related to changes in the Company’s own credit risk | (19.9) | 84.0
Other fair value adjustments | 56.0 | 52.1
Balance, end of period | 467.4 | 436.1
Less: current portion | (12.7) | (4.5)
Non-current portion of derivative financial liabilities | $ 454.7 | $ 431.6

X
- Definition The increase (decrease) in the fair value of a financial liability that is attributable to changes in the credit risk of that liability. [Refer: Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 10A -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_10A_a&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 10 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_10_a&doctype=Standard&book=b -URIDate 2021-03-24 + Details
Name: | ifrs-full_ChangesInFairValueOfFinancialLiabilityAttributableToChangesInCreditRiskOfLiability
Namespace Prefix: | ifrs-full_
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 members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfFinancialInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of current financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Other financial liabilities; Current financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2021-01-01 -Paragraph B13 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_B13_b&doctype=Appendix&subtype=B -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph m -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_m&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_OtherCurrentFinancialLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph m -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_m&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_OtherFinancialLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of non-current financial liabilities that the entity does not separately disclose in the same statement or note. [Refer: Other financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2021-01-01 -Paragraph B13 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_B13_c&doctype=Appendix&subtype=B -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph m -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_m&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_OtherNoncurrentFinancialLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Increase (Decrease) from Proceeds Received on Financial Liabilities + References No definition available. + Details
Name: | ngd_IncreaseDecreaseFromProceedsReceivedOnFinancialLiabilities
Namespace Prefix: | ngd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) in the fair value of a financial liability due to other adjustments. + References No definition available. + Details
Name: | ngd_IncreaseDecreaseInFairValueOfFinancialLiabilityOtherAdjustments
Namespace Prefix: | ngd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for meeting the commitments relating to the gold stream obligation. + References No definition available. + Details
Name: | ngd_PaymentsForMeetingCommitmentsRelatingToGoldStreamObligation
Namespace Prefix: | ngd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_TypesOfFinancialLiabilitiesAxis=ngd_GoldStreamObligationRainyRiverMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfFinancialLiabilitiesAxis=ngd_FreeCashFlowInterestObligationNewAftonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |