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v3.25.2

CONCENTRATION OF RISKS (Details) - USD ($) | 3 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Concentration of risk revenues | $ 250,240 | $ 0
Percentage of revenues | 11.00% | 0.00%
Accounts receivable trade | $ 317,314 | $ 0
Customer A [Member] |  |
Concentration of risk revenues | $ 250,240 | $ 0
Percentage of revenues | 11.00% | 0.00%
Accounts receivable trade | $ 317,314 | $ 0

X
- References No definition available. + Details
Name: | bglc_ConcentrationOfRiskAccountsReceivableTrade
Namespace Prefix: | bglc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | bglc_ConcentrationRiskRevenues
Namespace Prefix: | bglc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | bglc_PercentageOfRevenues
Namespace Prefix: | bglc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=bglc_CustomerAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |