Organization	12 Months Ended
Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	1. Organization The Grayscale Digital Large Cap Fund LLC (the “Fund”) was constituted as a Cayman Islands limited liability company on January 25, 2018 (the inception of the Fund) and commenced operations on February 1, 2018. In general, the Fund will hold digital assets. Historically, and through the period ending June 30, 2022, a digital asset had been eligible for inclusion in the Fund’s portfolio if it satisfied market capitalization, liquidity and coverage criteria as determined by the Manager (as defined below). Effective July 1, 2022, the Fund’s digital assets will consist of digital assets that comprise the CoinDesk Large Cap Select Index. See Footnote 12 - Subsequent Events for additional detail. Digital assets have been be held in the Fund’s portfolio on a market capitalization-weighted basis. At the inception of the Fund, the digital assets included in the Fund’s portfolio were: Bitcoin (“BTC”), Ethereum (“ETH”), XRP, Bitcoin Cash (“BCH”) and Litecoin (“LTC”). As of June 30, 2022, the digital assets included in the Fund’s portfolio were: Bitcoin (“BTC”), Ethereum (“ETH”), Cardano (“ADA”), Solana (“SOL”), Polkadot (“DOT”), Avalanche (“AVAX”), Litecoin (”LTC”), Uniswap (“UNI”), Chainlink (“LINK”) and Bitcoin Cash (“BCH”) (collectively, the “Fund Components”). On a quarterly basis beginning on the first business day of January, April, July and October of each year, the Manager performed an analysis and may rebalance the Fund’s portfolio based on these results in accordance with policies and procedures as set forth in the Fund’s Limited Liability Company Agreement (the “LLC Agreement”). The Fund is authorized under the LLC Agreement to create and issue an unlimited number of equal, fractional, undivided interests in the profits, losses, distributions, capital and assets of, and ownership of, the Fund (“Shares”) (in minimum baskets of 100 Shares, referred to as “Baskets”) in connection with creations. The redemption of Shares is not currently contemplated and the Fund does not currently operate a redemption program. Subject to receipt of regulatory approval and approval by the Manager in its sole discretion, the Fund may in the future operate a redemption program. The Fund currently has no intention of seeking regulatory approval to operate an ongoing redemption program. The Fund’s investment objective is to hold the top digital assets by market capitalization and for the value of the Shares to reflect the value of such Fund Components at any given time, less the Fund’s expenses and other liabilities. From time to time, the Fund may hold cash in U.S. dollars and positions in digital assets as a result of a fork, airdrop or similar event through which the Fund becomes entitled to another digital asset or other property by virtue of its ownership of one or more of the digital assets it then holds (each such new asset, a “Forked Asset”). Grayscale Investments, LLC (“Grayscale” or the “Manager”) acts as the Manager of the Fund and is a wholly owned subsidiary of Digital Currency Group, Inc. (“DCG”). The Manager is responsible for the day-to-day administration of the Fund pursuant to the provisions of the LLC Agreement. Grayscale is responsible for preparing and providing annual and quarterly reports on behalf of the Fund to investors and is also responsible for selecting and monitoring the Fund’s service providers. As partial consideration for the Manager’s services, the Fund pays Grayscale a Manager’s Fee as discussed in Note 7. The Manager also acts as the sponsor and manager of other investment products including Grayscale Basic Attention Token Trust (BAT) (OTCQB: GBAT), Grayscale Bitcoin Trust (BTC) (OTCQX: GBTC), Grayscale Bitcoin Cash Trust (BCH) (OTCQX: BCHG), Grayscale Chainlink Trust (LINK) (OTCQB: GLNK), Grayscale Decentraland Trust (MANA) (OTCQX: MANA), Grayscale Ethereum Trust (ETH) (OTCQX: ETHE), Grayscale Ethereum Classic Trust (ETC) (OTCQX: ETCG), Grayscale Filecoin Trust (FIL) (OTCQB: FILG), Grayscale Horizen Trust (ZEN) (OTCQX: HZEN), Grayscale Litecoin Trust (LTC) (OTCQX: LTCN), Grayscale Livepeer Trust (LPT) (OTCQB: GLIV), Grayscale Stellar Lumens Trust (XLM) (OTCQX: GXLM), Grayscale Zcash Trust (ZEC) (OTCQX: ZCSH), Grayscale Decentralized Finance (DeFi) Fund LLC, and Grayscale Smart Contract Platform Ex Ethereum (ETH) Fund LLC, each of which is an affiliate of the Fund. The following investment products sponsored or managed by the Manager are also SEC reporting companies with their shares registered pursuant to Section 12(g) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): Grayscale Bitcoin Trust (BTC), Grayscale Bitcoin Cash Trust (BCH), Grayscale Ethereum Trust (ETH), Grayscale Ethereum Classic Trust (ETC), Grayscale Horizen Trust (ZEN), Grayscale Litecoin Trust (LTC), Grayscale Stellar Lumens Trust (XLM), and Grayscale Zcash Trust (ZEC). Grayscale Advisors, LLC, a Registered Investment Advisor and an affiliate of the Manager, is the advisor to the Grayscale Future of Finance (NYSE: GFOF) product. Authorized Participants of the Fund are the only entities who may place orders to create or, if permitted, redeem Baskets. Genesis Global Trading, Inc. (“Genesis” or the “Authorized Participant”), a registered broker dealer and wholly owned subsidiary of DCG, is the only Authorized Participant and is party to a participant agreement with the Manager and the Fund. Additional Authorized Participants may be added at any time, subject to the discretion of the Manager. The custodian of the Fund is Coinbase Custody Trust Company, LLC (the “Custodian”), a third-party service provider. The Custodian is responsible for safeguarding the Fund Components and Forked Assets held by the Fund, and holding the private key(s) that provide access to the Fund’s digital wallets and vaults. The transfer agent for the Fund (the “Transfer Agent”) is Continental Stock Transfer & Trust Company. The responsibilities of the Transfer Agent are to maintain creations, redemptions, transfers, and distributions of the Fund’s Shares which are primarily held in book-entry form. On October 14, 2019, the Fund received notice that its Shares were qualified for public trading on the OTCQX U.S. Marketplace of the OTC Markets Group, Inc. (“OTCQX”). The Fund’s trading symbol on OTCQX is “GDLC” and the CUSIP number for its Shares is G40705108. The Fund’s previous trading symbol was “GDLCF” on OTCQX and was changed to “GDLC” on April 14, 2020. On July 21, 2020, the Fund registered with the Cayman Islands Monetary Authority (reference number: 1688783). The Fund is registered and regulated as a private fund under the Private Funds Act, 2020 of the Cayman Islands.

Organization

12 Months Ended

Jun. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. Organization

The Grayscale Digital Large Cap Fund LLC (the “Fund”) was constituted as a Cayman Islands limited liability company on January 25, 2018 (the inception of the Fund) and commenced operations on February 1, 2018. In general, the Fund will hold digital assets. Historically, and through the period ending June 30, 2022, a digital asset had been eligible for inclusion in the Fund’s portfolio if it satisfied market capitalization, liquidity and coverage criteria as determined by the Manager (as defined below). Effective July 1, 2022, the Fund’s digital assets will consist of digital assets that comprise the CoinDesk Large Cap Select Index. See Footnote 12 - Subsequent Events for additional detail. Digital assets have been be held in the Fund’s portfolio on a market capitalization-weighted basis. At the inception of the Fund, the digital assets included in the Fund’s portfolio were: Bitcoin (“BTC”), Ethereum (“ETH”), XRP, Bitcoin Cash (“BCH”) and Litecoin (“LTC”). As of June 30, 2022, the digital assets included in the Fund’s portfolio were: Bitcoin (“BTC”), Ethereum (“ETH”), Cardano (“ADA”), Solana (“SOL”), Polkadot (“DOT”), Avalanche (“AVAX”), Litecoin (”LTC”), Uniswap (“UNI”), Chainlink (“LINK”) and Bitcoin Cash (“BCH”) (collectively, the “Fund Components”). On a quarterly basis beginning on the first business day of January, April, July and October of each year, the Manager performed an analysis and may rebalance the Fund’s portfolio based on these results in accordance with policies and procedures as set forth in the Fund’s Limited Liability Company Agreement (the “LLC Agreement”). The Fund is authorized under the LLC Agreement to create and issue an unlimited number of equal, fractional, undivided interests in the profits, losses, distributions, capital and assets of, and ownership of, the Fund (“Shares”) (in minimum baskets of 100 Shares, referred to as “Baskets”) in connection with creations. The redemption of Shares is not currently contemplated and the Fund does not currently operate a redemption program. Subject to receipt of regulatory approval and approval by the Manager in its sole discretion, the Fund may in the future operate a redemption program. The Fund currently has no intention of seeking regulatory approval to operate an ongoing redemption program. The Fund’s investment objective is to hold the top digital assets by market capitalization and for the value of the Shares to reflect the value of such Fund Components at any given time, less the Fund’s expenses and other liabilities.

From time to time, the Fund may hold cash in U.S. dollars and positions in digital assets as a result of a fork, airdrop or similar event through which the Fund becomes entitled to another digital asset or other property by virtue of its ownership of one or more of the digital assets it then holds (each such new asset, a “Forked Asset”).

Grayscale Investments, LLC (“Grayscale” or the “Manager”) acts as the Manager of the Fund and is a wholly owned subsidiary of Digital Currency Group, Inc. (“DCG”). The Manager is responsible for the day-to-day administration of the Fund pursuant to the provisions of the LLC Agreement. Grayscale is responsible for preparing and providing annual and quarterly reports on behalf of the Fund to investors and is also responsible for selecting and monitoring the Fund’s service providers. As partial consideration for the Manager’s services, the Fund pays Grayscale a Manager’s Fee as discussed in Note 7. The Manager also acts as the sponsor and manager of other investment products including Grayscale Basic Attention Token Trust (BAT) (OTCQB: GBAT), Grayscale Bitcoin Trust (BTC) (OTCQX: GBTC), Grayscale Bitcoin Cash Trust (BCH) (OTCQX: BCHG), Grayscale Chainlink Trust (LINK) (OTCQB: GLNK), Grayscale Decentraland Trust (MANA) (OTCQX: MANA), Grayscale Ethereum Trust (ETH) (OTCQX: ETHE), Grayscale Ethereum Classic Trust (ETC) (OTCQX: ETCG), Grayscale Filecoin Trust (FIL) (OTCQB: FILG), Grayscale Horizen Trust (ZEN) (OTCQX: HZEN), Grayscale Litecoin Trust (LTC) (OTCQX: LTCN), Grayscale Livepeer Trust (LPT) (OTCQB: GLIV), Grayscale Stellar Lumens Trust (XLM) (OTCQX: GXLM), Grayscale Zcash Trust (ZEC) (OTCQX: ZCSH), Grayscale Decentralized Finance (DeFi) Fund LLC, and Grayscale Smart Contract Platform Ex Ethereum (ETH) Fund LLC, each of which is an affiliate of the Fund. The following investment products sponsored or managed by the Manager are also SEC reporting companies with their shares registered pursuant to Section 12(g) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): Grayscale Bitcoin Trust (BTC), Grayscale Bitcoin Cash Trust (BCH), Grayscale Ethereum Trust (ETH), Grayscale Ethereum Classic Trust (ETC), Grayscale Horizen Trust (ZEN), Grayscale Litecoin Trust (LTC), Grayscale Stellar Lumens Trust (XLM), and Grayscale Zcash Trust (ZEC). Grayscale Advisors, LLC, a Registered Investment Advisor and an affiliate of the Manager, is the advisor to the Grayscale Future of Finance (NYSE: GFOF) product.

Authorized Participants of the Fund are the only entities who may place orders to create or, if permitted, redeem Baskets. Genesis Global Trading, Inc. (“Genesis” or the “Authorized Participant”), a registered broker dealer and wholly owned subsidiary of DCG, is the only Authorized Participant and is party to a participant agreement with the Manager and the Fund. Additional Authorized Participants may be added at any time, subject to the discretion of the Manager.

The custodian of the Fund is Coinbase Custody Trust Company, LLC (the “Custodian”), a third-party service provider. The Custodian is responsible for safeguarding the Fund Components and Forked Assets held by the Fund, and holding the private key(s) that provide access to the Fund’s digital wallets and vaults.

The transfer agent for the Fund (the “Transfer Agent”) is Continental Stock Transfer & Trust Company. The responsibilities of the Transfer Agent are to maintain creations, redemptions, transfers, and distributions of the Fund’s Shares which are primarily held in book-entry form.

On October 14, 2019, the Fund received notice that its Shares were qualified for public trading on the OTCQX U.S. Marketplace of the OTC Markets Group, Inc. (“OTCQX”). The Fund’s trading symbol on OTCQX is “GDLC” and the CUSIP number for its Shares is G40705108. The Fund’s previous trading symbol was “GDLCF” on OTCQX and was changed to “GDLC” on April 14, 2020.

On July 21, 2020, the Fund registered with the Cayman Islands Monetary Authority (reference number: 1688783). The Fund is registered and regulated as a private fund under the Private Funds Act, 2020 of the Cayman Islands.