Document and Entity Information - shares	6 Months Ended
	Dec. 31, 2024	Jan. 31, 2025
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q2
Document Period End Date	Dec. 31, 2024
Document Quarterly Report	true
Document Transition Report	false
Current Fiscal Year End Date	--06-30
Entity Registrant Name	Grayscale Digital Large Cap Fund LLC
Entity Central Index Key	0001729997
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Common Stock, Shares Outstanding		15,867,400
Entity Shell Company	false
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Trading Symbol	GDLC
Entity Interactive Data Current	Yes
Entity File Number	000-56284
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	98-1406784
Entity Address, Address Line One	290 Harbor Drive, 4th Floor
City Area Code	212
Local Phone Number	668-1427
Entity Address, City or Town	Stamford
Entity Address, Postal Zip Code	06902
Entity Address, State or Province	CT
Title of 12(g) Security	Grayscale Digital Large Cap Fund LLC Shares