Investments in Loans and Financing Receivables - Narrative (Details) $ in Thousands, € in Millions, £ in Millions	1 Months Ended								12 Months Ended
	Jul. 31, 2025 GBP (£)	Jun. 30, 2025 GBP (£) extension_option	Feb. 28, 2025 USD ($) extension_option	Dec. 31, 2024 GBP (£)	Sep. 30, 2024 USD ($)	Apr. 30, 2024 USD ($)	Nov. 30, 2023 GBP (£)	Oct. 31, 2023 USD ($) state property	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2025 GBP (£)	Jul. 31, 2025 EUR (€)	Jul. 31, 2025 GBP (£)	Dec. 31, 2024 GBP (£)	May 31, 2024 GBP (£)	Jan. 31, 2024 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Investment in loans and preferred equity									$ 1,613,276	$ 631,650	$ 201,621
Collection of loans receivable						$ 33,000
Senior Secured Notes
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal | £							£ 142.0
Basis spread on variable rate (as a percent)							5.75%
Credit adjustment spread (as a percent)									0.28%			0.28%
Payments to acquire notes receivable | £							£ 136.7
Unsecured, Interest-Only Loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal																	$ 11,000
Interest rate (as a percent)																	11.00%
Mortgage loan issued																	$ 9,800
Spirit Realty Capital, Inc.
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan acquired in conjunction with acquisition, fair value					$ 5,300
Loss on sale					$ 1,500
8.125% Due May 2030
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivables, net | £																£ 300.0
8.125% Due May 2030 | Senior Notes
Financing Receivable, Allowance for Credit Loss [Line Items]
Stated interest rate (as a percent)																8.125%
Senior Secured Notes, 5.25%, Due November 2030 | Senior Secured Notes
Financing Receivable, Allowance for Credit Loss [Line Items]
Basis spread on variable rate (as a percent)										5.36%					5.36%
Payments to acquire notes receivable | £				£ 199.0
Financing receivables, net | £															£ 200.0
Mortgage Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Automotive service properties used as collateral | property								9
Number of states in service | state								7
Mortgage Loans | Real Estate Loan | Residential Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Mortgage loan issued								$ 33,500
Mortgage Loans | Senior Unsecured Notes | Senior Notes
Financing Receivable, Allowance for Credit Loss [Line Items]
Stated interest rate (as a percent)								8.37%
Loans Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal									$ 1,721,300	$ 848,200
Financing receivables, net									1,682,100	828,500
Mortgage loan issued									$ 1,712,600	840,800
Loans Receivable | EUR-Denominated Senior Secured Notes Due July 2031
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal | €													€ 100.0
Interest rate (as a percent)													8.00%	8.00%
Loans Receivable | GBP-Denominated Senior Secured Notes
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal | £														£ 200.0
Basis spread on variable rate (as a percent)									5.36%			5.36%
Credit adjustment spread (as a percent)													0.11%	0.11%
Loans Receivable | GBP-Denominated Senior Secured Notes | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Basis spread on variable rate (as a percent)													4.50%	4.50%
Loans Receivable | GBP-Denominated Senior Secured Notes | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Basis spread on variable rate (as a percent)													5.25%	5.25%
Loans Receivable | Senior Secured Notes Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal									$ 1,250,400	$ 803,700
Interest rate (as a percent)									8.00%	8.125%		8.00%			8.125%
Basis spread on variable rate (as a percent)									6.03%	5.75%		6.03%			5.75%
Payments to acquire notes receivable | £	£ 197.0
Financing receivables, net									$ 1,214,100	$ 785,800
Mortgage loan issued									1,241,300	797,200
Loans Receivable | Mortgage Loan Secured By an Office Property
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest rate (as a percent)		7.50%
Principal amount, acquired | £		£ 121.5
Funding commitments | £		£ 20.5										£ 17.8
Loans Receivable | Mortgage Loan Secured By a Logistics Property
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest rate (as a percent)		7.50%
Principal amount, acquired | £		£ 40.3
Funding commitments | £		£ 8.5										£ 7.5
Number of extension options | extension_option		1
Extension option term		12 months
Loans Receivable | Unsecured and Other Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal									214,700
Principal amount, acquired			$ 200,000
Number of extension options | extension_option			2
Extension option term			12 months
Cash rate (as a percent)			10.25%
Payment-in-kind rate (as a percent)			10.75%
Investment in loans and preferred equity			$ 199,800
Origination costs			$ 1,100
Financing receivables, net									211,800
Mortgage loan issued									$ 214,900
Loans Receivable | Unsecured and Other Loans | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest rate (as a percent)									10.25%			10.25%
Loans Receivable | Unsecured and Other Loans | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest rate (as a percent)									11.00%			11.00%
Loans Receivable | Mortgage Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Principal									$ 256,200	$ 33,500
Interest rate (as a percent)										8.37%					8.37%
Financing receivables, net									256,200	$ 33,500
Mortgage loan issued									$ 256,400	$ 33,500
Loans Receivable | Mortgage Loans | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest rate (as a percent)									7.50%			7.50%
Loans Receivable | Mortgage Loans | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest rate (as a percent)									8.50%			8.50%