v3.26.3
Creations and Redemptions of Shares - Additional Information (Detail) - shares
Sep. 30, 2026
Dec. 31, 2025
Equity [Abstract]
Share represented as ETC
0.7705
0.7850
X
- Definition
Common share equivalent of ETC.
+ References
No definition available.
+ Details
Name:
etcg_CommonShareEquivalentOfETC
Namespace Prefix:
etcg_
Data Type:
xbrli:decimalItemType
Balance Type:
na
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
us-gaap_EquityAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration