Debt - Components (Details) - USD ($)	Dec. 31, 2024	Oct. 15, 2024	Aug. 16, 2024	Aug. 09, 2024	Mar. 19, 2024	Dec. 31, 2023	Nov. 17, 2023	Dec. 13, 2022
Line of Credit Facility [Line Items]
Maximum principal amount committed, credit facilities						$ 1,130,000,000
Maximum principal amount committed	$ 2,984,000,000
Principal Amount Outstanding	1,751,300,000					643,000,000
Principal amount available	717,844,000					226,529,000
Carrying value, credit facilities						643,000,000
Carrying value	1,745,999,000					643,000,000
Asset Pledged as Collateral
Line of Credit Facility [Line Items]
Assets pledged as collateral	3,080,569,000					1,343,705,000
Senior notes
Line of Credit Facility [Line Items]
Maximum principal amount committed, other borrowings	615,000,000
ASPV Credit Facility | Line of credit
Line of Credit Facility [Line Items]
Maximum principal amount committed, credit facilities	500,000,000			$ 500,000,000		300,000,000		$ 300,000,000
Principal Amount Outstanding	251,300,000					150,000,000
Principal amount available	69,062,000					56,227,000
Carrying value, credit facilities	251,300,000					150,000,000
ASPV Credit Facility | Line of credit | Asset Pledged as Collateral
Line of Credit Facility [Line Items]
Assets pledged as collateral	493,142,000					305,690,000
MSPV Credit Facility | Line of credit
Line of Credit Facility [Line Items]
Maximum principal amount committed, credit facilities	500,000,000					500,000,000
Principal Amount Outstanding	191,400,000					350,300,000
Principal amount available	101,922,000					29,127,000
Carrying value, credit facilities	191,400,000					350,300,000
MSPV Credit Facility | Line of credit | Asset Pledged as Collateral
Line of Credit Facility [Line Items]
Assets pledged as collateral	505,122,000					606,827,000
Truist Credit Facility | Line of credit
Line of Credit Facility [Line Items]
Maximum principal amount committed, credit facilities	975,000,000		$ 975,000,000			330,000,000	$ 300,000,000
Principal Amount Outstanding	299,600,000					142,700,000
Principal amount available	546,860,000					141,175,000
Carrying value, credit facilities	299,600,000					142,700,000
Truist Credit Facility | Line of credit | Asset Pledged as Collateral
Line of Credit Facility [Line Items]
Assets pledged as collateral	1,639,675,000					$ 431,188,000
Series A Tranche A Notes | Senior notes
Line of Credit Facility [Line Items]
Maximum principal amount committed, other borrowings	90,000,000				$ 90,000,000
Principal Amount Outstanding	90,000,000
Carrying value, other borrowings	89,732,000
Series A Tranche A Notes | Senior notes | Asset Pledged as Collateral
Line of Credit Facility [Line Items]
Assets pledged as collateral	0
Series A Tranche B Notes | Senior notes
Line of Credit Facility [Line Items]
Maximum principal amount committed, other borrowings	150,000,000				$ 150,000,000
Principal Amount Outstanding	150,000,000
Carrying value, other borrowings	148,799,000
Series A Tranche B Notes | Senior notes | Asset Pledged as Collateral
Line of Credit Facility [Line Items]
Assets pledged as collateral	0
Series B Tranche A Notes | Senior notes
Line of Credit Facility [Line Items]
Maximum principal amount committed, other borrowings	85,000,000	$ 85,000,000
Principal Amount Outstanding	85,000,000
Carrying value, other borrowings	84,330,000
Series B Tranche A Notes | Senior notes | Asset Pledged as Collateral
Line of Credit Facility [Line Items]
Assets pledged as collateral	0
Series B Tranche B Notes | Senior notes
Line of Credit Facility [Line Items]
Maximum principal amount committed, other borrowings	25,000,000	25,000,000
Principal Amount Outstanding	25,000,000
Carrying value, other borrowings	25,000,000
Series B Tranche B Notes | Senior notes | Asset Pledged as Collateral
Line of Credit Facility [Line Items]
Assets pledged as collateral	0
Series B Tranche C Notes | Senior notes
Line of Credit Facility [Line Items]
Maximum principal amount committed, other borrowings	290,000,000	$ 290,000,000
Principal Amount Outstanding	290,000,000
Carrying value, other borrowings	286,838,000
Series B Tranche C Notes | Senior notes | Asset Pledged as Collateral
Line of Credit Facility [Line Items]
Assets pledged as collateral	0
CLO Transaction | Secured Debt
Line of Credit Facility [Line Items]
Maximum principal amount committed, other borrowings	369,000,000
Principal Amount Outstanding	369,000,000
Carrying value, other borrowings	369,000,000
CLO Transaction | Secured Debt | Asset Pledged as Collateral
Line of Credit Facility [Line Items]
Assets pledged as collateral	$ 442,629,000