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EMPLOYEE BENEFITS - Percentage of performance shares vesting (Details) | Jun. 30, 2020
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Percentage performance shares versting: |
% of performance shares vesting 25th percentile | 0.00%
% of performance shares vesting, 25th to 50th percentile | 0.25%
% of performance shares vesting, 50th to 75th percentile | 0.75%
% of performance shares vesting, more than or equal to 75th percentile | 1.00%

X
- Definition Percentage of performance shares vesting in relation to percentile of peers range 50th to 75th. + References No definition available. + Details
Name: | drd_PercentageOfPerformanceSharesVestingFiftiethToSeventyFifthPercentile
Namespace Prefix: | drd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of performance shares vesting in relation to percentile of peers range more than or equal to 75th. + References No definition available. + Details
Name: | drd_PercentageOfPerformanceSharesVestingMoreThanSeventyFifthPercentile
Namespace Prefix: | drd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of performance shares vesting in relateion to percentiles of peer group, twenty-fifth. + References No definition available. + Details
Name: | drd_PercentageOfPerformanceSharesVestingTwentyFifthPercentile
Namespace Prefix: | drd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of performance shares vesting in relation to percentile of peers range 25th to 50th. + References No definition available. + Details
Name: | drd_PercentageOfPerformanceSharesVestingTwentyFifthToFiftyPercentile
Namespace Prefix: | drd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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