XML 105 R88.htm IDEA: XBRL DOCUMENT
v3.21.1

FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES (Schedule of highest and lowest points in equity price risk) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2020
Disclosure of fair value measurement of assets [line items] |
Hong Kong – Hang Seng Index | 27,231
Bottom of range [member] |
Disclosure of fair value measurement of assets [line items] |
Hong Kong – Hang Seng Index | 21,139
Top of range [member] |
Disclosure of fair value measurement of assets [line items] |
Hong Kong – Hang Seng Index | 29,175

X
- Definition Hang Seng Index. + References No definition available. + Details
Name: | chnr_DescriptionOfHongKongHangSengIndex
Namespace Prefix: | chnr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfFairValueMeasurementOfAssetsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |