The percentage of capital shares.

No definition available.

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- Definition

Share capital percentage.

+ References

No definition available.

+ Details

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Data Type:	dtr:percentItemType
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- Definition

Date when an entity was incorporated

+ References

No definition available.

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of equity interest issued or issuable by acquirer as part of consideration transferred in business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 41
-Publisher FASB
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Reference 4: http://www.xbrl.org/2003/role/exampleRef
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-Name Accounting Standards Codification
-Section 55
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479303/805-10-55-42

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
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-Topic 323
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-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Details

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- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=btbt_BitDigitalIncMember
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Data Type:	na
Balance Type:
Period Type:

- Details

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Data Type:	na
Balance Type:
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- Details

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- Details

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Organization and Principal Activities (Details) - shares			9 Months Ended
	Nov. 28, 2025	Aug. 08, 2025	Sep. 30, 2026	Aug. 15, 2024
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Incorporation date			Feb. 17, 2017
Percentage of capital shares			100.00%
Share capital percentage	15.90%
FM's Share Capital [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ownership percentage	9.10%
Bit Digital Europe Holding [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ownership percentage	25.00%
Ordinary shares [Member] \| Bit Digital, Inc. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Number of shares exchange (in Shares)		27,043,749
WhiteFiber AI, Inc [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ownership percentage			59.70%	100.00%
Bit Digital, Inc. [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Percentage of capital shares		100.00%
WhiteFiber, Inc [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ownership percentage		71.50%	59.70%