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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Related-Party Transactions - Manager Equity Plan (Details) - USD ($) $ in Millions	1 Months Ended			3 Months Ended		9 Months Ended
	Nov. 30, 2022	Nov. 30, 2020	Sep. 30, 2019	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Related-Party Transactions
Granted (in shares)						914,694
Manager Equity Plan
Related-Party Transactions
Granted (in shares)						0
Restricted stock units \| Manager Equity Plan
Related-Party Transactions
Granted (in shares)	1,500,000	1,800,000	1,200,000
Share-based expense				$ 5.1	$ 4.5	$ 15.4	$ 13.5