Joint Venture - Investments In JV’s Portfolio (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) company	Dec. 31, 2021 USD ($)
Schedule of Equity Method Investments [Line Items]
Fair Value	$ 48,959,003	$ 30,795,693
Nonconsolidated Investee
Schedule of Equity Method Investments [Line Items]
Fair Value	5,099,533
BCRED Emerald JV LP
Schedule of Equity Method Investments [Line Items]
Fair Value	$ 5,099,533
Number of portfolio companies | company	325
Weighted average yield on debt and income producing investments, at fair value	8.86%
Weighted average yield on debt and income producing investments, at cost	8.75%
Percentage of assets on non-accrual	0.00%
BCRED Emerald JV LP | Investments At Fair Value | Interest Rate Type Risk | Debt Securities, Variable Rate
Schedule of Equity Method Investments [Line Items]
% of Total Investments at Fair Value	100.00%
BCRED Emerald JV LP | Investments At Fair Value | Interest Rate Type Risk | Debt Securities, Fixed Rate
Schedule of Equity Method Investments [Line Items]
% of Total Investments at Fair Value	0.00%