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Related Party Disclosures (Details)	12 Months Ended
	Dec. 31, 2020
Management Fees
Monthly management fee	8.33%
Percent value of net assets of the Trust	0.40%
Monthly expense including management fee	8.33%
Threshold percent value of net assets of trust to calculate management fee	0.65%

X

- Definition

The monthly expenses including management fee expressed as a fraction used to calculate the monthly management fees.

+ References

No definition available.

+ Details

Name:	cef_MonthlyExpensesIncludingManagementFee
Namespace Prefix:	cef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The monthly management fee expressed as a fraction used to calculate the monthly management fees.

+ References

No definition available.

+ Details

Name:	cef_MonthlyManagementFee
Namespace Prefix:	cef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage of the value of net assets of the Trust that serves as a basis for calculating management fees (per the Trust Agreement).

+ References

No definition available.

+ Details

Name:	cef_PercentValueOfNetAssetsOfTrust
Namespace Prefix:	cef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Threshold percent value of net assets of trust to calculate management fee.

+ References

No definition available.

+ Details

Name:	cef_ThresholdPercentValueOfNetAssetsOfTrustToCalculateManagementFee
Namespace Prefix:	cef_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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