Distributions - Cash Distributions on Common Stock (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Distribution Amount
Return of capital	$ 0	$ 0
Net investment income	616	562
Short-term capital gains proceeds from the sale of assets	0	0
Long-term capital gains proceeds from the sale of assets	0	0
Total	$ 616	$ 562
Percentage
Return of capital	0.00%	0.00%
Net investment income	100.00%	100.00%
Short-term capital gains proceeds from the sale of assets	0.00%	0.00%
Long-term capital gains proceeds from the sale of assets	0.00%	0.00%
Total	100.00%	100.00%
Gross investment income attributable to cash income earned	85.70%	84.80%
Gross investment income attributable to non-cash accretion of discount	3.00%	4.90%
Gross investment income attributable to paid-in-kind interest	11.30%	10.30%