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Statement - Consolidated Schedule of Investments link:presentationLink link:calculationLink link:definitionLink 0000009 - Statement - Consolidated Schedule of Investments (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0000010 - Disclosure - Organization link:presentationLink link:calculationLink link:definitionLink 0000011 - Disclosure - Significant Accounting Policies and Recent Accounting Updates link:presentationLink link:calculationLink link:definitionLink 0000012 - Disclosure - Stockholders’ Equity link:presentationLink link:calculationLink link:definitionLink 0000013 - Disclosure - Related Party Transactions link:presentationLink link:calculationLink link:definitionLink 0000014 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 0000015 - Disclosure - Derivatives link:presentationLink link:calculationLink link:definitionLink 0000016 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 0000017 - Disclosure - Borrowings link:presentationLink link:calculationLink link:definitionLink 0000018 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 0000019 - Disclosure - Financial Highlights link:presentationLink link:calculationLink link:definitionLink 0000020 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 0000021 - Disclosure - Dividends and Distributions link:presentationLink link:calculationLink link:definitionLink 0000022 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Significant Accounting Policies and Recent Accounting Updates (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Stockholders’ Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - 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Schedule of Subscription and Contribution (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Stockholders’ Equity - Schedule of Shares of GDLCU Common Stock Issued (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Related Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Investments - Schedule of Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Investments - Schedules of Portfolio Composition by Geographic Region at Amortized Cost and Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Investments - Schedule of Portfolio Composition by Industry at Amortized Cost and Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Derivatives - Schedule of Outstanding Forward Currency Contracts (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Derivatives - Schedule of Outstanding Forward Currency Contracts (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Derivatives - Schedule of Impact of Derivative Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Derivatives - Schedule of Average Outstanding Daily Volume for Forward Currency Contract (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Derivatives - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Derivatives - Schedule of Effects of Offsetting Derivative Contracts on the Financial Statements (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Fair Value Measurements - Schedule of Fair Value Measurements of Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - 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