Commitments, Contingencies, Concentration of Credit Risk and Off-Balance Sheet Risk - Schedule of Certain Revolving Loan Facilities and Other Commitments with Unfunded Balances (Details) - USD ($)	6 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Unfunded Balances	$ 31,641,988	$ 19,228,521
Accordion Partners LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 15, 2031
Unfunded Balances	$ 573,500	682,738
Accordion Partners LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 15, 2031
Unfunded Balances	$ 455,159	455,159
Accuserve Solutions, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Mar. 15, 2030
Unfunded Balances	$ 228,561	263,724
Alcami Corporation
Debt Instrument [Line Items]
Debt instrument, maturity date	Dec. 21, 2028
Unfunded Balances	$ 128,322	118,698
ALCV Purchaser, Inc. (AutoLenders)
Debt Instrument [Line Items]
Debt instrument, maturity date	Feb. 25, 2026
Unfunded Balances	$ 46,318	0
AlphaSense, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 27, 2029
Unfunded Balances	$ 538,525	538,525
Alpine Acquisition Corp II (48Forty)
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 30, 2029
Unfunded Balances	$ 53,604	151,635
AmeriLife Holdings, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 31, 2028
Unfunded Balances	$ 250,925	273,736
Applause App Quality, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Oct. 24, 2029
Unfunded Balances	$ 64,646	80,808
Appriss Health, LLC (PatientPing)
Debt Instrument [Line Items]
Debt instrument, maturity date	May 06, 2027
Unfunded Balances	$ 76,086	76,086
Aras Corporation
Debt Instrument [Line Items]
Debt instrument, maturity date	Apr. 13, 2029
Unfunded Balances	$ 75,165	75,165
Avalara, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Oct. 19, 2028
Unfunded Balances	$ 0	454,858
Beekeeper Buyer Inc. (Archway)
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 30, 2031
Unfunded Balances	$ 300,649	0
Bluefin Holding, LLC (Allvue)
Debt Instrument [Line Items]
Debt instrument, maturity date	Sep. 12, 2029
Unfunded Balances	$ 405,340	405,340
Bonterra LLC (Fka CyberGrants Holdings, LLC)
Debt Instrument [Line Items]
Debt instrument, maturity date	Sep. 08, 2027
Unfunded Balances	$ 0	90,333
Brown & Settle, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	May 16, 2030
Unfunded Balances	$ 152,758	0
CBI-Gator Acquisition, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Oct. 25, 2027
Unfunded Balances	$ 9,405	9,405
Cherry Bekaert Advisory, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 30, 2028
Unfunded Balances	$ 0	46,865
Cherry Bekaert Advisory, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 30, 2028
Unfunded Balances	$ 157,416	190,576
Chronicle Parent LLC (Lexitas)
Debt Instrument [Line Items]
Debt instrument, maturity date	Apr. 15, 2031
Unfunded Balances	$ 1,301,093	0
Chronicle Parent LLC (Lexitas)
Debt Instrument [Line Items]
Debt instrument, maturity date	Apr. 15, 2031
Unfunded Balances	$ 433,698	0
Civic Plus, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 25, 2027
Unfunded Balances	$ 0	92,051
Civicplus LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 24, 2030
Unfunded Balances	$ 1,120,695	0
Civicplus LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 23, 2030
Unfunded Balances	$ 218,129	0
Clever Devices Ltd.
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 12, 2030
Unfunded Balances	$ 254,902	176,471
Community Merger Sub Debt LLC (CINC Systems)
Debt Instrument [Line Items]
Debt instrument, maturity date	Jan. 18, 2030
Unfunded Balances	$ 214,286	214,286
Crewline Buyer, Inc. (New Relic)
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 08, 2030
Unfunded Balances	$ 369,286	369,286
Disco Parent, Inc. (Duck Creek Technologies)
Debt Instrument [Line Items]
Debt instrument, maturity date	Mar. 30, 2029
Unfunded Balances	$ 224,240	224,240
DNAnexus, Inc
Debt Instrument [Line Items]
Debt instrument, maturity date	Dec. 18, 2029
Unfunded Balances	$ 700,000	700,000
Douglas Holdings, Inc (Docupace)
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 27, 2030
Unfunded Balances	$ 0	98,696
Douglas Holdings, Inc (Docupace)
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 27, 2030
Unfunded Balances	$ 78,957	89,724
Douglas Holdings, Inc (Docupace)
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 27, 2030
Unfunded Balances	$ 31,509	42,996
Douglas Holdings, Inc (Docupace)
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 27, 2030
Unfunded Balances	$ 35,889	35,889
Dragos, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 30, 2030
Unfunded Balances	$ 1,505,550	0
Dragos, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 30, 2030
Unfunded Balances	$ 552,770	0
EBS Parent Holdings Inc. (The Difference Card)
Debt Instrument [Line Items]
Debt instrument, maturity date	Jul. 01, 2032
Unfunded Balances	$ 350,658	0
EBS Parent Holdings Inc. (The Difference Card)
Debt Instrument [Line Items]
Debt instrument, maturity date	Jul. 01, 2032
Unfunded Balances	$ 116,886	0
e-Discovery AcquireCo, LLC (Reveal)
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 29, 2029
Unfunded Balances	$ 375,420	563,129
Emerald Technologies (U.S.) AcquisitionCo, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Dec. 29, 2026
Unfunded Balances	$ 355	84,573
ESO Solutions, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	May 03, 2027
Unfunded Balances	$ 0	73,368
Express Wash Acquisition Company, LLC (Whistle)
Debt Instrument [Line Items]
Debt instrument, maturity date	Apr. 10, 2031
Unfunded Balances	$ 167,278	0
FirstUp, Inc
Debt Instrument [Line Items]
Debt instrument, maturity date	Jul. 13, 2027
Unfunded Balances	$ 198,790	0
Flexport Capital, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 30, 2029
Unfunded Balances	$ 1,826,734	0
Foreside Financial Group, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Sep. 01, 2027
Unfunded Balances	$ 28,325	38,277
Fusion Holding Corp. (Finalsite)
Debt Instrument [Line Items]
Debt instrument, maturity date	Sep. 15, 2027
Unfunded Balances	$ 25,566	340,879
Fusion Risk Management, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	May 22, 2029
Unfunded Balances	$ 336,928	421,160
G-3 Apollo Acquisition Corp (Appriss Retail)
Debt Instrument [Line Items]
Debt instrument, maturity date	Mar. 10, 2031
Unfunded Balances	$ 430,157	0
G-3 Apollo Acquisition Corp (Appriss Retail)
Debt Instrument [Line Items]
Debt instrument, maturity date	Mar. 10, 2031
Unfunded Balances	$ 384,274	0
GTY Technology Holdings Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Jul. 09, 2029
Unfunded Balances	$ 0	928,207
GTY Technology Holdings Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Jul. 09, 2029
Unfunded Balances	$ 191,053	318,422
Honey Intermediate, Inc. (iLobby) (Canada)
Debt Instrument [Line Items]
Debt instrument, maturity date	Sep. 26, 2030
Unfunded Balances	$ 531,371	531,371
Huckabee Acquisition, LLC (MOREgroup)
Debt Instrument [Line Items]
Debt instrument, maturity date	Jan. 16, 2030
Unfunded Balances	$ 161,290	161,290
Huckabee Acquisition, LLC (MOREgroup)
Debt Instrument [Line Items]
Debt instrument, maturity date	Jan. 16, 2030
Unfunded Balances	$ 96,774	96,774
ICIMS, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 18, 2028
Unfunded Balances	$ 355,477	334,567
INH Buyer, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Mar. 02, 2026
Unfunded Balances	$ 141,302	0
Integrate.com, Inc. (Infinity Data, Inc.)
Debt Instrument [Line Items]
Debt instrument, maturity date	Dec. 17, 2027
Unfunded Balances	$ 7,528	7,528
Integrity Marketing Acquisition, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 25, 2028
Unfunded Balances	$ 2,790,931	2,880,792
Intercept Bidco, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 03, 2030
Unfunded Balances	$ 166,667	166,667
Intercept Bidco, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 03, 2030
Unfunded Balances	$ 111,111	111,111
IQN Holding Corporation (Beeline)
Debt Instrument [Line Items]
Debt instrument, maturity date	May 02, 2029
Unfunded Balances	$ 832,159	0
JF Acquisition, LLC (JF Petroleum)
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 18, 2030
Unfunded Balances	$ 1,005,296	0
JF Acquisition, LLC (JF Petroleum)
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 18, 2030
Unfunded Balances	$ 376,986	0
Kaseya, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 25, 2029
Unfunded Balances	$ 0	156,818
Kaseya, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 25, 2029
Unfunded Balances	$ 0	158,083
Kid Distro Holdings, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Oct. 01, 2029
Unfunded Balances	$ 74,263	74,263
Lighthouse Parent Holdings, Inc (Aperture)
Debt Instrument [Line Items]
Debt instrument, maturity date	Dec. 20, 2031
Unfunded Balances	$ 28,846	28,846
Lighthouse Parent Holdings, Inc (Aperture)
Debt Instrument [Line Items]
Debt instrument, maturity date	Dec. 20, 2031
Unfunded Balances	$ 11,538	11,538
Lightspeed Solutions, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Mar. 01, 2028
Unfunded Balances	$ 0	0
LJ Avalon Holdings, LLC (Ardurra)
Debt Instrument [Line Items]
Debt instrument, maturity date	Feb. 01, 2029
Unfunded Balances	$ 123,523	123,523
Logicmonitor, Inc
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 19, 2031
Unfunded Balances	$ 101,496	101,496
Madison Logic Holdings, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Dec. 30, 2027
Unfunded Balances	$ 82,677	82,677
Majco LLC (Big Brand Tire)
Debt Instrument [Line Items]
Debt instrument, maturity date	May 17, 2032
Unfunded Balances	$ 2,993,415	0
Modigent, LLC (Pueblo)
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 23, 2027
Unfunded Balances	$ 176,902	42,014
MRO Parent Corporation
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 09, 2032
Unfunded Balances	$ 223,044	0
MRO Parent Corporation
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 09, 2032
Unfunded Balances	$ 223,044	0
Oak Purchaser, Inc. (Daysmart)
Debt Instrument [Line Items]
Debt instrument, maturity date	Apr. 28, 2028
Unfunded Balances	$ 69,335	86,669
Oranje Holdco, Inc. (KnowBe4)
Debt Instrument [Line Items]
Debt instrument, maturity date	Feb. 01, 2029
Unfunded Balances	$ 181,355	181,355
Peter C. Foy & Associates Insurance Services, LLC (PCF Insurance)
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 01, 2027
Unfunded Balances	$ 0	99,374
PlayPower, Inc
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 28, 2030
Unfunded Balances	$ 395,397	395,397
Pluralsight, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 22, 2029
Unfunded Balances	$ 86,293	86,293
PMA Parent Holdings, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Jan. 31, 2031
Unfunded Balances	$ 564,581	564,581
Rialto Management Group, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Dec. 05, 2030
Unfunded Balances	$ 17,241	17,241
Sailpoint Technologies Holdings, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Aug. 16, 2028
Unfunded Balances	$ 0	132,507
SellerX Germany GmbH & Co. Kg (Germany)
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 18, 2029
Unfunded Balances	$ 287,744	0
SellerX Germany GmbH (Germany)
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 22, 2029
Unfunded Balances	$ 0	105,633
SellerX Germany GmbH (Germany)
Debt Instrument [Line Items]
Debt instrument, maturity date	Oct. 28, 2026
Unfunded Balances	$ 42,253	42,253
SEP Raptor Acquisition, Inc. (Loopio) (Canada)
Debt Instrument [Line Items]
Debt instrument, maturity date	Mar. 31, 2027
Unfunded Balances	$ 0	197,187
Serrano Parent, LLC (Sumo Logic)
Debt Instrument [Line Items]
Debt instrument, maturity date	May 13, 2030
Unfunded Balances	$ 388,509	388,509
Smarsh, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Feb. 18, 2029
Unfunded Balances	$ 70,164	0
Smarsh, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Feb. 18, 2029
Unfunded Balances	$ 244,757	244,757
Smarsh, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Feb. 18, 2029
Unfunded Balances	$ 0	73,427
Spark Buyer, LLC (Sparkstone)
Debt Instrument [Line Items]
Debt instrument, maturity date	Oct. 15, 2031
Unfunded Balances	$ 224,138	224,138
Spark Buyer, LLC (Sparkstone)
Debt Instrument [Line Items]
Debt instrument, maturity date	Oct. 15, 2031
Unfunded Balances	$ 100,862	112,069
Stonebridge Companies, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	May 16, 2031
Unfunded Balances	$ 371,129	0
Stonebridge Companies, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	May 16, 2030
Unfunded Balances	$ 247,419	0
Streamland Media Midco LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Mar. 31, 2029
Unfunded Balances	$ 113,945	0
Supergoop, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Dec. 28, 2027
Unfunded Balances	$ 58,209	124,734
Thunder Purchaser, Inc. (Vector Solutions)
Debt Instrument [Line Items]
Debt instrument, maturity date	Jun. 30, 2027
Unfunded Balances	$ 204,439	204,439
Titan Home Improvement, LLC (Renuity)
Debt Instrument [Line Items]
Debt instrument, maturity date	May 31, 2030
Unfunded Balances	$ 139,535	139,535
Titan Home Improvement, LLC (Renuity)
Debt Instrument [Line Items]
Debt instrument, maturity date	May 31, 2030
Unfunded Balances	$ 116,279	116,279
Trintech, Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Jul. 25, 2029
Unfunded Balances	$ 196,336	196,336
Vortex Companies, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Sep. 04, 2029
Unfunded Balances	$ 462,973	0
Vortex Companies, LLC
Debt Instrument [Line Items]
Debt instrument, maturity date	Sep. 04, 2029
Unfunded Balances	$ 157,822	174,407
Wharf Street Rating Acquisition LLC (KBRA)
Debt Instrument [Line Items]
Debt instrument, maturity date	Dec. 10, 2027
Unfunded Balances	$ 265,685	265,685
Zendesk Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 22, 2028
Unfunded Balances	$ 504,927	735,838
Zendesk Inc.
Debt Instrument [Line Items]
Debt instrument, maturity date	Nov. 22, 2028
Unfunded Balances	$ 302,992	302,992
Zilliant Incorporated
Debt Instrument [Line Items]
Debt instrument, maturity date	Dec. 21, 2027
Unfunded Balances	$ 222,222	$ 222,222

BlackRock Direct Lending Corp. 10-Q