Distributions - Cash Distributions on Common Stock (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Distribution Amount
Offering proceeds		$ 0	$ 0	$ 0
Borrowings		0	0	0
Net investment income		812	827	754
Short-term capital gains proceeds from the sale of assets		0	0	0
Long-term capital gains proceeds from the sale of assets		0	0	0
Non-capital gains proceeds from the sale of assets		0	0	0
Distributions on account of preferred and common equity		0	0	0
Total	[1]	$ 812	$ 827	$ 754
Percentage
Offering proceeds		0.00%	0.00%	0.00%
Borrowings		0.00%	0.00%	0.00%
Net investment income		100.00%	100.00%	100.00%
Short-term capital gains proceeds from the sale of assets		0.00%	0.00%	0.00%
Long-term capital gains proceeds from the sale of assets		0.00%	0.00%	0.00%
Non-capital gains proceeds from the sale of assets		0.00%	0.00%	0.00%
Distributions on account of preferred and common equity		0.00%	0.00%	0.00%
Total		100.00%	100.00%	100.00%
Gross investment income attributable to cash income earned		85.20%	86.60%	85.50%
Gross investment income attributable to non-cash accretion of discount		2.50%	2.90%	4.50%
Gross investment income attributable to paid-in-kind interest		12.30%	10.50%	10.00%

[1] See Note 5 for a discussion of the sources of distributions paid by the Company.