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Agreements and Related Party Transactions (Details) - USD ($)						12 Months Ended
	Aug. 02, 2022	Feb. 25, 2022	Jan. 01, 2021	Dec. 23, 2020	Aug. 02, 2018	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2018
Related Party Transaction [Line Items]
Management fee expense						$ 32,649,000	$ 29,501,000	$ 19,517,000
Base management fees payable						8,347,000	7,981,000
Incentive fee expense						32,046,000	6,579,000	14,742,000
Incentive management fees payable						7,737,000	0
Administrative fees expense						2,200,000	3,400,000	2,500,000
Administrative fees payable						536,000	677,000
Original Advisory Agreement | Affiliated Entity
Related Party Transaction [Line Items]
Base management fee, percent	1.375%
Incentive fee, percent		2.00%
Amended and Restated Advisory Agreement | Affiliated Entity
Related Party Transaction [Line Items]
Base management fee, percent				1.25%
New Barings BDC Advisory Agreement | Affiliated Entity
Related Party Transaction [Line Items]
Incentive fee, percent		2.0625%
Original Advisory Agreement - Annualized Incentive Fee Rate | Affiliated Entity
Related Party Transaction [Line Items]
Base management fee		8.00%
New Barings BDC Advisory Agreement - Annualized Incentive Fee Rate | Affiliated Entity
Related Party Transaction [Line Items]
Base management fee		8.25%
Investment Advisory Agreement | Affiliated Entity
Related Party Transaction [Line Items]
Base management fee					1.25%
Investment Management Agreement - Incentive Rate, Quarterly Hurdle Rate | Affiliated Entity
Related Party Transaction [Line Items]
Incentive fee, percent			2.0625%
Investment Management Agreement - Incentive Rate, Annualized Hurdle Rate | Affiliated Entity
Related Party Transaction [Line Items]
Incentive fee, percent			8.25%
Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold | Affiliated Entity
Related Party Transaction [Line Items]
Incentive fee, percent			100.00%
Investment Management Agreement - Incentive Rate, Quarterly Catch-Up Threshold | Affiliated Entity
Related Party Transaction [Line Items]
Incentive fee, percent			2.57813%
Investment Management Agreement - Incentive Rate, Annual Catch-Up Threshold | Affiliated Entity
Related Party Transaction [Line Items]
Incentive fee, percent			10.3125%
Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold | Affiliated Entity
Related Party Transaction [Line Items]
Incentive fee, percent			20.00%
Pre-Incentive Fee Net Investment Income For Trailing Twelve Quarters Exceeds Catch-Up Amount | Affiliated Entity
Related Party Transaction [Line Items]
Incentive fee, percent			20.00%
Investment Management Agreement - Incentive Rate, Cumulative Pre-Incentive Fee Net Return | Affiliated Entity
Related Party Transaction [Line Items]
Incentive fee, percent			20.00%
Investment Management Agreement - Incentive Rate, Realized Capital Gains
Related Party Transaction [Line Items]
Incentive fee expense						0	0	$ 0
Investment Management Agreement - Incentive Rate, Realized Capital Gains | Affiliated Entity
Related Party Transaction [Line Items]
Incentive fee, percent									20.00%
Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income
Related Party Transaction [Line Items]
Incentive fee expense						$ 32,000,000	$ 6,600,000
MVC Credit Support Agreement | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction amount (up to)				$ 23,000,000
Related party transaction, term				10 years
MVC Credit Support Agreement - Covered Credit Losses Minimum | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction amount (up to)				$ 0.00
Sierra Credit Support Agreement | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction amount (up to)		$ 100,000,000
Related party transaction, term		10 years
Sierra Credit Support Agreement Covered Credit Losses Minimum | Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction amount (up to)		$ 0.00

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