XML 118 R59.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Long-term debt - Schedule of borrowings (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Non-current portion of non-current borrowings, by type [abstract] |  |
Total long-term debt | $ 397.0 | $ 396.0
Senior unsecured notes - due July 15, 2027 |  |
Non-current portion of non-current borrowings, by type [abstract] |  |
Total long-term debt | 397.0 | 396.0
Credit facility |  |
Non-current portion of non-current borrowings, by type [abstract] |  |
Total long-term debt | $ 0.0 | $ 0.0

X
- Definition The non-current portion of non-current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_LongtermBorrowings
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_NoncurrentPortionOfNoncurrentBorrowingsByTypeAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=ngd_TwoThousandTwentySevenUnsecuredNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BorrowingsByNameAxis=ngd_CreditFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |