v3.26.1
DocumentAndEntityInformation
Jun. 26, 2026
Document Information Line Items  
Entity Central Index Key 0001461219
Document Type 8-K
Document Period End Date Jun. 26, 2026
Entity Registrant Name GRAHAM ALTERNATIVE INVESTMENT FUND I LLC
Entity File Number 0-53965
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 20-4897069
Entity Address, Address Line One c/o GRAHAM CAPITAL MANAGEMENT, L.P.
Entity Address, Address Line Two 40 Highland Avenue
Entity Address, City or Town Rowayton
Entity Address, State or Province CT
Entity Address, Postal Zip Code 06853
City Area Code 203
Local Phone Number 899-3400
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Amendment Flag false