XML 46 R34.htm IDEA: XBRL DOCUMENT v3.25.4

Creation and Redemption of Shares (Details)	12 Months Ended
	Dec. 31, 2025 shares
Creation Baskets [Member]
Creation and Redemption of Shares [Line Items]
Redeem shares	5,000

X

- References

No definition available.

+ Details

Name:	arkb_CreationAndRedemptionOfSharesLineItems
Namespace Prefix:	arkb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of stock bought back by the entity at the exercise price or redemption price.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-2

+ Details

Name:	us-gaap_StockRedeemedOrCalledDuringPeriodShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_ProductOrServiceAxis=arkb_CreationBasketsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: