Indebtedness - Schedule of Debt (Details) $ / shares in Units, $ in Thousands, shares in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Total debt, gross	$ 14,859,227
Unamortized debt discount	(163,656)
Total debt, net	14,695,571	$ 12,901,492
Unused borrowing capacity	$ 39,500
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001	$ 0.0001
Debt discount amortization	$ 2,303	$ 0	$ 0
Recourse debt
Debt Instrument [Line Items]
Total debt, gross	726,965	875,100
Unamortized debt discount	(9,436)	(11,454)
Total debt, net	717,529	863,646
Unused borrowing capacity	0
Recourse debt | Line of credit
Debt Instrument [Line Items]
Total debt, gross	238,323	$ 384,226
Unused borrowing capacity	$ 0
Weighted average interest rate (as percent)	7.20%	8.45%
Line of credit, maximum borrowing capacity	$ 321,400
Recourse debt | Line of credit | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	3.25%
Recourse debt | Line of credit | Federal Funds Rate
Debt Instrument [Line Items]
Interest rate (as percent)	0.50%
Recourse debt | Line of credit | Prime Rate
Debt Instrument [Line Items]
Interest rate (as percent)	1.00%
Recourse debt | Convertible Senior Notes due 2030
Debt Instrument [Line Items]
Total debt, gross	$ 5,457	$ 7,687
Unused borrowing capacity	$ 0
Weighted average interest rate (as percent)	0.00%	0.00%
Contractual interest rate (as percent)	0.00%
Recourse debt | Convertible Senior Notes due 2030
Debt Instrument [Line Items]
Total debt, gross	$ 483,185	$ 483,187
Unused borrowing capacity	$ 0
Weighted average interest rate (as percent)	4.00%	4.00%
Contractual interest rate (as percent)	4.00%
Recourse debt | Line of Credit | Base Rate | Minimum
Debt Instrument [Line Items]
Interest rate (as percent)	2.25%
Recourse debt | Line of Credit | Base Rate | Maximum
Debt Instrument [Line Items]
Interest rate (as percent)	2.75%
Non-recourse debt
Debt Instrument [Line Items]
Total debt, gross	$ 14,132,262	$ 12,155,441
Total debt, net	13,978,042	12,037,846
Unused borrowing capacity	39,500
Non-recourse debt | Senior revolving and delayed draw loans
Debt Instrument [Line Items]
Total debt, gross	2,104,000	$ 2,412,400
Unused borrowing capacity	$ 39,500
Weighted average interest rate (as percent)	6.51%	7.24%
Aggregate principal amount	$ 2,800,000
Non-recourse debt | Senior revolving and delayed draw loans | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	2.35%
Non-recourse debt | Senior revolving and delayed draw loans | Secured Overnight Financing Rate (SOFR) | Maximum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	3.10%
Non-recourse debt | Senior non-revolving loans
Debt Instrument [Line Items]
Total debt, gross	$ 2,661,578	$ 2,325,558
Unused borrowing capacity	$ 0
Weighted average interest rate (as percent)	6.24%	6.66%
Non-recourse debt | Senior non-revolving loans | Minimum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	4.66%
Non-recourse debt | Senior non-revolving loans | Maximum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	6.93%
Non-recourse debt | Senior non-revolving loans | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	1.90%
Non-recourse debt | Senior non-revolving loans | Secured Overnight Financing Rate (SOFR) | Maximum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	2.25%
Non-recourse debt | Subordinated revolving and delayed draw loans
Debt Instrument [Line Items]
Total debt, gross	$ 43,900	$ 20,400
Unused borrowing capacity	$ 0
Weighted average interest rate (as percent)	12.94%	13.62%
Non-recourse debt | Subordinated revolving and delayed draw loans | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	9.10%
Non-recourse debt | Subordinated loans
Debt Instrument [Line Items]
Total debt, gross	$ 3,285,877	$ 2,691,534
Total debt, net	162,400
Unused borrowing capacity	$ 0
Weighted average interest rate (as percent)	9.39%	9.36%
Non-recourse debt | Subordinated loans | Minimum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	7.00%
Non-recourse debt | Subordinated loans | Maximum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	10.75%
Non-recourse debt | Subordinated loans | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	6.50%
Non-recourse debt | Subordinated loans | Secured Overnight Financing Rate (SOFR) | Maximum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	6.90%
Non-recourse debt | Securitized loans
Debt Instrument [Line Items]
Total debt, gross	$ 6,036,907	$ 4,705,549
Unused borrowing capacity	$ 0
Weighted average interest rate (as percent)	5.40%	5.08%
Non-recourse debt | Securitized loans | Minimum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	2.27%
Non-recourse debt | Securitized loans | Maximum
Debt Instrument [Line Items]
Contractual interest rate (as percent)	6.60%
Non-recourse debt | Convertible Senior Notes
Debt Instrument [Line Items]
Total debt, net	$ 5,500
Non-recourse debt | Fixed Rate Senior Non Revolving Loans
Debt Instrument [Line Items]
Total debt, net	1,700,000
Non-recourse debt | Floating Rate Subordinated Loans
Debt Instrument [Line Items]
Total debt, net	680,700
Unamortized debt (discount) premium, net
Debt Instrument [Line Items]
Unamortized debt (discount) premium, net	(154,220)	$ (117,595)
Unused borrowing capacity	$ 0
Line of Credit | Secured Overnight Financing Rate (SOFR) | Minimum
Debt Instrument [Line Items]
Interest rate (as percent)	3.25%
Line of Credit | Secured Overnight Financing Rate (SOFR) | Maximum
Debt Instrument [Line Items]
Interest rate (as percent)	3.75%
Line of Credit | 2022 Credit Agreement, Base Rate Loans | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as percent)	0.00%
Line of Credit | 2022 Credit Agreement, Base Rate Loans | Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as percent)	0.00%
Line of Credit | 2022 Credit Agreement, SOFR Rate Loans | One Month, Secured Overnight Financing Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as percent)	0.11448%
Line of Credit | 2022 Credit Agreement, SOFR Rate Loans | Three Month, Secured Overnight Financing Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as percent)	0.26161%
Line of Credit | 2022 Credit Agreement, SOFR Rate Loans | Six Month, Secured Overnight Financing Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as percent)	0.42826%
Convertible Debt | Convertible Senior Notes
Debt Instrument [Line Items]
Total debt, net	$ 483,200
Interest rate (as percent)	4.00%
Equivalent conversion price (in USD per share) | $ / shares	$ 117.91
Initial conversion rate	0.0084807
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001
Effective interest rate (as percent)	0.57%
Debt discount amortization	$ 7,700
Conversion price (in dollars per share) | $ / shares	$ 0.0613704
Convertible Debt | Convertible Senior Notes | Capped Call
Debt Instrument [Line Items]
Payments for capped call transaction	$ 28,000
Conversion price (in dollars per share) | $ / shares	$ 157.22
Number of shares covered by capped calls (in shares) | shares	3.4
Convertible Debt | Convertible Senior Notes | Base Rate
Debt Instrument [Line Items]
Effective interest rate (as percent)	4.51%
Debt discount amortization	$ 3,600
Conversion price (in dollars per share) | $ / shares	$ 16.29
Convertible Debt | Convertible Senior Notes | Base Rate | Capped Call
Debt Instrument [Line Items]
Payments for capped call transaction	$ 38,400
Conversion price (in dollars per share) | $ / shares	$ 22.37
Number of shares covered by capped calls (in shares) | shares	29.7