v3.25.2
Document and Entity Information
Jul. 25, 2025
Cover [Abstract]  
Entity Registrant Name EQT Private Equity Co LLC
Amendment Flag false
Entity Central Index Key 0002032020
Document Type 8-K
Document Period End Date Jul. 25, 2025
Entity Incorporation State Country Code DE
Entity File Number 000-56683
Entity Tax Identification Number 99-3903361
Entity Address, Address Line One 1114 Avenue of the Americas
Entity Address, Address Line Two 45th Floor
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10036
City Area Code (917)
Local Phone Number 281-0850
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Entity Ex Transition Period false