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v3.25.2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) | Jun. 30, 2025
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Equipment [Member] |
Principal Annual Rates | 20.00%
Air Conditioner [Member] |
Principal Annual Rates | 20.00%
Buildings [Member] |
Principal Annual Rates | 2.00%
Computer and Software [Member] |
Principal Annual Rates | 33.00%
Lab Equipment [Member] |
Principal Annual Rates | 10.00%
Office Equipment [Member] |
Principal Annual Rates | 20.00%
Signboard [Member] |
Principal Annual Rates | 10.00%
Furniture and fittings [Member] |
Principal Annual Rates, Minimum | 10.00%
Principal Annual Rates, Maximum | 20.00%
Motor Vehicle [Member] |
Principal Annual Rates, Minimum | 10.00%
Principal Annual Rates, Maximum | 20.00%
Renovation [Member] |
Principal Annual Rates, Minimum | 10.00%
Principal Annual Rates, Maximum | 20.00%
Solar PV System [Member] |
Principal Annual Rates | 20.00%
Machinery [Member] |
Principal Annual Rates | 10.00%

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

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

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

X
- Definition Stated as a percentage, the estimated or actual value of the asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose) divided by its [historical] capitalized cost. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bglc_AirconditionerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bglc_BuildingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bglc_ComputerAndSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bglc_LabEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_OfficeEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bglc_SignboardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bglc_FurnitureAndFittingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bglc_MotorVehicleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bglc_RenovationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bglc_SolarPVSystemMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=bglc_MachineryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |