XML 105 R74.htm IDEA: XBRL DOCUMENT v3.19.1

LONG-TERM DEBT (Details) (Parenthetical)	12 Months Ended
	Dec. 31, 2018
Senior unsecured notes - due November 15, 2022
Long Term Debt [Line Items]
Borrowings, maturity	November 15, 2022
Senior unsecured notes - due May15, 2025
Long Term Debt [Line Items]
Borrowings, maturity	May 15, 2025

X

- Definition

The maturity of borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph 7
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_7&doctype=Standard
-URIDate 2018-03-16

+ Details

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

X

- References

No definition available.

+ Details

Name:	ngd_LongTermDebtLineItems
Namespace Prefix:	ngd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=ngd_TwoThousandTwentyTwoUnsecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=ngd_TwoThousandTwentyFiveUnsecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: