SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - (FY) (Details)	6 Months Ended	12 Months Ended
Jun. 30, 2023 USD ($)	Dec. 31, 2022 item	Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Number of Wealth Management Product \| item		2	2
Useful Life of Specified Mining Machines			2 years
Useful Life of Mining Data-center			13 years
Balance of cryptocurrency receivables	$ 0		$ 0	$ 0	$ 0
Writeoff for allowance for Credit Loss,			0	0	0
Recovery for allowance for Credit Loss			$ 0	$ 0	$ 0

The term of contract which approximates to the life of mining data-center.

No definition available.

Name:	btdr_ContractTermUsefulLifeOfMiningDataCenter
Namespace Prefix:	btdr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The term of contract which approximates to the life of specified mining machines.

No definition available.

Name:	btdr_ContractTermUsefulLifeOfSpecifiedMiningMachines
Namespace Prefix:	btdr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Amount of increase in allowance for credit loss on cryptocurrency receivable from recovery.

No definition available.

Name:	btdr_CryptocurrencyReceivablesAllowanceForCreditLossRecovery
Namespace Prefix:	btdr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of writeoff of cryptocurrency receivable, charged against allowance for credit loss.

No definition available.

Name:	btdr_CryptocurrencyReceivablesAllowanceForCreditLossWriteoff
Namespace Prefix:	btdr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The number of wealth management product types purchased during the period.

No definition available.

Name:	btdr_NumberOfWealthManagementProductTypesPurchased
Namespace Prefix:	btdr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Amount of provision for credit loss on cryptocurrency receivable.

No definition available.

Name:	btdr_ProvisionForCreditLossOnCryptocurrencyReceivables
Namespace Prefix:	btdr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

No definition available.

Name:	btdr_SignificantAccountingPoliciesAbstract
Namespace Prefix:	btdr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration