Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Carrying value as of the balance sheet date of liabilities incurred through that date and payable for statutory sales and use taxes, including value added tax.

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Distributions (Details) - USD ($) $ / shares in Units, $ in Millions																																																		1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended	134 Months Ended	136 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Dec. 27, 2024	Sep. 30, 2024	Jun. 28, 2024	Mar. 29, 2024	Dec. 29, 2023	Sep. 29, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 30, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 15, 2021	Sep. 15, 2021	Jun. 30, 2021	Mar. 31, 2021	Jan. 13, 2021	Dec. 14, 2020	Sep. 15, 2020	Jun. 30, 2020	Mar. 30, 2020	Dec. 16, 2019	Sep. 16, 2019	Jun. 14, 2019	Mar. 29, 2019	Dec. 28, 2018	Dec. 14, 2018	Sep. 14, 2018	Jun. 15, 2018	Apr. 06, 2018	Dec. 01, 2017	Sep. 15, 2017	Jun. 16, 2017	Apr. 17, 2017	Dec. 16, 2016	Sep. 16, 2016	Jun. 16, 2016	Apr. 15, 2016	Dec. 16, 2015	Sep. 16, 2015	Jun. 16, 2015	Apr. 16, 2015	Dec. 31, 2014	Dec. 16, 2014	Sep. 16, 2014	Jun. 17, 2014	Apr. 30, 2014	Mar. 31, 2014	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2016	Jun. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Dec. 31, 2023
Distribution of Assets, Liabilities and Stockholders' Equity [Line Items]
Excise tax payable																																																										$ 1.6	$ 1.5
Investment company, tax return of capital distribution (dollars per share)																																																							$ 0.24
Earnings distributed (in dollars per share)	$ 0.30	$ 0.30	$ 0.30	$ 0.30	$ 0.40	$ 0.40	$ 0.40	$ 0.40	$ 0.40	$ 0.40		$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.10	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.10	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.15	$ 0.36	$ 0.32	$ 0.30	$ 0.09				$ 0.60	$ 0.80		$ 16.65	$ 16.65
Total distributions declared per share, Basic (in dollars per share)																																																		$ 0.30
Sales and excise tax payable, net																																																			$ 0.4	$ 0.3	$ 0.8	$ 0.7
Undistributed earnings	$ 42.0																																																		$ 42.0		$ 42.0			$ 42.0	$ 42.0
Undistributed earnings (in dollars per share)	$ 1.04																																																		$ 1.04		$ 1.04			$ 1.04	$ 1.04
Distributions Declared October 28, 2022
Distribution of Assets, Liabilities and Stockholders' Equity [Line Items]
Earnings distributed (in dollars per share)											$ 0.37
Distributions Declared December 9, 2022
Distribution of Assets, Liabilities and Stockholders' Equity [Line Items]
Earnings distributed (in dollars per share)											$ 0.10