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Warrants - Schedule Of The Warrants Outstanding (Detail) | Jun. 30, 2023 shares
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Class of Warrant or Right [Line Items] |
Class of Warrant or Right, Outstanding | 43,848,750
Public Warrants [Member] |
Class of Warrant or Right [Line Items] |
Class of Warrant or Right, Outstanding | 31,625,000
Private Warrants [Member] |
Class of Warrant or Right [Line Items] |
Class of Warrant or Right, Outstanding | 12,223,750

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- 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
Name: | us-gaap_ClassOfWarrantOrRightLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=btm_PublicWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=btm_PrivateWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |