Organization	12 Months Ended
Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	1. Organization Great Elm Group, Inc. (referred to as the Company or GEG) is an alternative asset management company incorporated in Delaware. The Company focuses on growing a scalable and diversified portfolio of long-duration and permanent capital vehicles across credit, real estate, specialty finance, and other alternative strategies. The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, including Great Elm Capital Management, LLC (GECM), Great Elm Opportunities GP, Inc. (GEO GP), Great Elm Capital GP, LLC (GEC GP), Great Elm Investments, LLC (GEI), Great Elm FM Acquisition, Inc. (FM Acquisition), Great Elm DME Holdings, Inc. (DME Holdings), Monomoy CRE, LLC (MCRE), Monomoy BTS Construction Management, LLC (MCM), Monomoy Construction Services, LLC (MCS) and Monomoy BTS Corporation (MBTS). In addition, we have determined that the Company was the primary beneficiary of certain variable interest entities, and therefore the operations of those entities have been included in our consolidated results for the relevant periods.

Organization

12 Months Ended

Jun. 30, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. Organization

Great Elm Group, Inc. (referred to as the Company or GEG) is an alternative asset management company incorporated in Delaware. The Company focuses on growing a scalable and diversified portfolio of long-duration and permanent capital vehicles across credit, real estate, specialty finance, and other alternative strategies.

The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, including Great Elm Capital Management, LLC (GECM), Great Elm Opportunities GP, Inc. (GEO GP), Great Elm Capital GP, LLC (GEC GP), Great Elm Investments, LLC (GEI), Great Elm FM Acquisition, Inc. (FM Acquisition), Great Elm DME Holdings, Inc. (DME Holdings), Monomoy CRE, LLC (MCRE), Monomoy BTS Construction Management, LLC (MCM), Monomoy Construction Services, LLC (MCS) and Monomoy BTS Corporation (MBTS). In addition, we have determined that the Company was the primary beneficiary of certain variable interest entities, and therefore the operations of those entities have been included in our consolidated results for the relevant periods.