Joint Ventures - BCRED Emerald JV and BCRED Verdelite JV (Details) - USD ($)	6 Months Ended	12 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Affiliated Entity
Schedule of Equity Method Investments [Line Items]
Net realized gains and losses	$ 200,000
Loan Purchase \| Affiliated Entity
Schedule of Equity Method Investments [Line Items]
Purchases from related party	1,100,000,000
Loan Purchase, Fair Value \| Affiliated Entity
Schedule of Equity Method Investments [Line Items]
Purchases from related party	1,100,000,000
BCRED Emerald JV LP
Schedule of Equity Method Investments [Line Items]
Committed contribution	2,250,000,000	$ 2,250,000,000
Capital contribution	1,836,000,000	1,815,000,000
Available capital	$ 414,000,000.0	$ 435,000,000.0
Equity ownership percentage	75.00%	75.00%
BCRED Emerald JV LP \| JV Partner
Schedule of Equity Method Investments [Line Items]
Committed contribution	$ 750,000,000.0	$ 750,000,000.0
Capital contribution	612,000,000.0	605,000,000.0
Available capital	$ 138,000,000.0	$ 145,000,000.0
Equity ownership percentage	25.00%	25.00%
BCRED Verdelite JV LP
Schedule of Equity Method Investments [Line Items]
Committed contribution	$ 147,000,000.0
Available capital	29,300,000	$ 29,300,000
Payments to acquire equity method investments	$ 117,700,000	$ 117,700,000
Equity ownership percentage	87.50%	87.50%
BCRED Verdelite JV LP \| JV Partner
Schedule of Equity Method Investments [Line Items]
Committed contribution		$ 21,000,000.0
Available capital	$ 4,200,000	4,200,000
Payments to acquire equity method investments	$ 16,800,000	$ 16,800,000
Equity ownership percentage	12.50%	12.50%

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