Distributions - Narrative (Details) $ / shares in Units, $ in Millions				6 Months Ended
	Jul. 31, 2024 installment $ / shares	May 29, 2024 $ / shares	Feb. 28, 2024 installment $ / shares	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Schedule of Distributions [Line Items]
Common stock, dividends (in dollars per share) | $ / shares		$ 0.05	$ 0.05
Number of installments | installment			2
Percent of market price				95.00%
Capital loss carryforwards				$ 2,323
Unrealized appreciation				1,263	$ 1,282
Unrealized depreciation				2,238	2,418
Income tax purposes				15,798	16,517
Net unrealized appreciation (depreciation)				(1,711)	$ (1,868)
Subsidiaries
Schedule of Distributions [Line Items]
Deferred tax liability				4
Deferred tax asset				113
Deferred tax asset offset by valuation allowance				$ 113
Subsequent Event
Schedule of Distributions [Line Items]
Distributions declared per share (in dollars per share) | $ / shares	$ 0.70
Common stock, dividends (in dollars per share) | $ / shares	$ 0.10
Number of installments | installment	2