Commitment and Contingencies- Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Other Commitments [Line Items]
Estimated unfunded commitments	$ 3,717.0
Delayed Draw Term Loans And Revolvers
Other Commitments [Line Items]
Unfunded commitments	$ 6,753.9	$ 4,870.5

Amount of financial support to be provided in future by investment company to investee.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=66023616&loc=SL35737436-115832

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant