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Commercial Mortgage Loans, Subordinate Loans and Other Lending Assets, Net - Schedule of Activity Relating to Loan Portfolio (Parenthetical) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Apr. 30, 2024	Sep. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit loss allowance liability on unfunded commitments		$ 3.9
Hotel - Honolulu, Hi
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized loss from sale of mortgage loan receivable	$ 0.7
Massachusetts Healthcare
Accounts, Notes, Loans and Financing Receivable [Line Items]
Realized loss from sale of mortgage loan receivable		127.5
Loans and leases receivable of written off		136.6
Loans and leases receivable of interest received and unamortized origination fees		$ 9.1

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- Definition

Credit loss allowance liability on unfunded commitments.

+ References

No definition available.

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- Definition

Loans and leases receivable of interest received and unamortized origination fees.

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- Definition

Loans and leases receivable of written off.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

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- Definition

Reflects the net positive or negative amount derived from subtracting from net proceeds of sale and the carrying amounts, net of allocated reserves, of financial assets transferred to third parties in transactions that qualify for sales treatment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-5

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