XML 50 R33.htm IDEA: XBRL DOCUMENT
v3.21.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Disclosure of basis of preparation [Abstract] |
Schedule of Estimated Useful Life | Estimated useful lives are as follows:
Buildings |  | 8 - 35 years
Machinery and equipment |  | 3 - 15 years
Motor vehicles |  | 4 - 8 years

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

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