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ORGANIZATION AND NATURE OF BUSINESS (Details 2) | 3 Months Ended
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Mar. 31, 2024
Machinery [Member] |
Estimated Useful Life | 20 years
Furniture, fixtures and equipment [Member] | Minimum [Member] |
Estimated Useful Life | 5 years
Furniture, fixtures and equipment [Member] | Maximum [Member] |
Estimated Useful Life | 10 years
Computers and software [Member] | Minimum [Member] |
Estimated Useful Life | 3 years
Computers and software [Member] | Maximum [Member] |
Estimated Useful Life | 5 years
Leasehold improvements and technical works [Member] |
Estimated useful life, description | Lesser of lease term or 25 years
Buildings [Member] | Minimum [Member] |
Estimated Useful Life | 25 years
Buildings [Member] | Maximum [Member] |
Estimated Useful Life | 30 years
Vehicles [Member] |
Estimated Useful Life | 6 years

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- References No definition available. + Details
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Namespace Prefix: | cosm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | cosm_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | cosm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=cosm_LeaseholdImprovementsAndTechnicalWorksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=cosm_BuildingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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