XML 65 R34.htm IDEA: XBRL DOCUMENT
v3.19.1

SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
SIGNIFICANT ACCOUNTING POLICIES [Abstract] |
Disclosure of subsidiaries [text block] | THE PRINCIPAL SUBSIDIARIES OF THE COMPANY ARE AS FOLLOWS:
Name of subsidiary/associate (2) | Principal activity | Method of accounting | Country of incorporation and operation | Interest as at December 31, 2018 | Interest as at December 31, 2017
Minera San Xavier S.A. de C.V. | Mining | Consolidated | Mexico | 100% | 100%
Peak Gold Mines Pty Ltd. (1) | Mining | Consolidated | Australia | 0% | 100%
Western Mesquite Mines Inc. (1) | Mining | Consolidated | USA | 0% | 100%
| 1. | The Company sold Peak Gold Mines Pty Ltd in April 2018 and sold Western Mesquite Mines Inc. in October 2018.
| 2. | New Gold Inc. directly owns the assets of Rainy River, New Afton and Blackwater.
Disclosure of detailed information about estimated useful life of property plant and equipment [text block] |
Asset class | Estimated useful life (years)
Plant and machinery | 3 – 17
Mobile equipment | 5 – 7

X
- Definition The disclosure of subsidiaries. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 17 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_17_b&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 16 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_16_b&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2018-01-01 -Paragraph B4 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_B4_a&doctype=Appendix&seq=2 -URIDate 2018-03-16 + Details
Name: | ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of detailed information about estimated useful life of property plant and equipment. + References No definition available. + Details
Name: | ngd_DisclosureOfDetailedInformationAboutEstimatedUsefulLifeOfPropertyPlantAndEquipmentTextBlock
Namespace Prefix: | ngd_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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