Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Nonrecourse
Debt Instrument [Line Items]
Principal	$ 5,149,000	$ 4,634,235
Secured Debt \| Nonrecourse \| Operating
Debt Instrument [Line Items]
Principal	5,123,200	4,633,735
Carrying Value
Debt Instrument [Line Items]
Long-term debt	370,461	568,912
Carrying Value \| Operating Segments \| Investment Management
Debt Instrument [Line Items]
Long-term debt	199,389	198,677
Carrying Value \| Operating Segments \| Operating
Debt Instrument [Line Items]
Long-term debt	70,372	70,120
Carrying Value \| Corporate and Other
Debt Instrument [Line Items]
Long-term debt	100,700	300,115
Carrying Value \| Nonrecourse
Debt Instrument [Line Items]
Long-term debt	5,025,845	4,587,228
Carrying Value \| Secured Debt
Debt Instrument [Line Items]
Principal	378,422	578,422
Premium (discount), net	(1,055)	(1,293)
Deferred financing costs	(6,906)	(8,217)
Long-term debt	370,461	568,912
Carrying Value \| Secured Debt \| Series 2021-1 Notes
Debt Instrument [Line Items]
Principal	300,000	300,000
Premium (discount), net	0	0
Deferred financing costs	(6,781)	(7,829)
Long-term debt	293,219	292,171
Carrying Value \| Secured Debt \| Series 2021-1 Notes \| Operating Segments \| Investment Management
Debt Instrument [Line Items]
Long-term debt	199,389	198,677
Carrying Value \| Secured Debt \| Series 2021-1 Notes \| Operating Segments \| Operating
Debt Instrument [Line Items]
Long-term debt	70,372	70,120
Carrying Value \| Secured Debt \| Series 2021-1 Notes \| Corporate and Other
Debt Instrument [Line Items]
Long-term debt	23,458	23,374
Carrying Value \| Secured Debt \| Nonrecourse
Debt Instrument [Line Items]
Principal	5,149,000	4,634,235
Premium (discount), net	(49,020)	10,713
Deferred financing costs	(74,135)	(57,720)
Carrying Value \| Convertible and Exchangeable Senior Notes
Debt Instrument [Line Items]
Principal	78,422	278,422
Premium (discount), net	(1,055)	(1,293)
Deferred financing costs	(125)	(388)
Long-term debt	77,242	276,741
Carrying Value \| Convertible and Exchangeable Senior Notes \| Operating Segments \| Investment Management
Debt Instrument [Line Items]
Long-term debt	0	0
Carrying Value \| Convertible and Exchangeable Senior Notes \| Operating Segments \| Operating
Debt Instrument [Line Items]
Long-term debt	0	0
Carrying Value \| Convertible and Exchangeable Senior Notes \| Corporate and Other
Debt Instrument [Line Items]
Long-term debt	$ 77,242	$ 276,741

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt discount (premium).

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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