Other Assets - Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Swap
Derivative [Line Items]
Notional Amount	$ 6,060,900	$ 4,480,500
Weighted Average Fixed-Pay Interest Rate	3.02%	2.74%
Weighted Average Variable Interest Rate	3.90%	3.87%
Swap \| Within 30 days
Derivative [Line Items]
Notional Amount	$ 0	$ 0
Weighted Average Fixed-Pay Interest Rate	0.00%	0.00%
Weighted Average Variable Interest Rate	0.00%	0.00%
Swap \| Over 30 days to 3 months
Derivative [Line Items]
Notional Amount	$ 450,000	$ 0
Weighted Average Fixed-Pay Interest Rate	1.12%	0.00%
Weighted Average Variable Interest Rate	3.90%	0.00%
Swap \| Over 3 months to 6 months
Derivative [Line Items]
Notional Amount	$ 850,000	$ 0
Weighted Average Fixed-Pay Interest Rate	1.58%	0.00%
Weighted Average Variable Interest Rate	3.90%	0.00%
Swap \| Over 6 months to 12 months
Derivative [Line Items]
Notional Amount	$ 215,000	$ 450,000
Weighted Average Fixed-Pay Interest Rate	2.93%	1.12%
Weighted Average Variable Interest Rate	3.90%	3.87%
Swap \| Over 12 months to 24 months
Derivative [Line Items]
Notional Amount	$ 326,500	$ 1,065,000
Weighted Average Fixed-Pay Interest Rate	3.20%	1.85%
Weighted Average Variable Interest Rate	3.90%	3.87%
Swap \| Over 24 months to 36 months
Derivative [Line Items]
Notional Amount	$ 429,300	$ 341,500
Weighted Average Fixed-Pay Interest Rate	3.08%	3.23%
Weighted Average Variable Interest Rate	3.90%	3.87%
Swap \| Over 36 months to 48 months
Derivative [Line Items]
Notional Amount	$ 898,000	$ 332,800
Weighted Average Fixed-Pay Interest Rate	3.28%	2.96%
Weighted Average Variable Interest Rate	3.90%	3.87%
Swap \| Over 48 months to 60 months
Derivative [Line Items]
Notional Amount	$ 1,089,700	$ 1,463,900
Weighted Average Fixed-Pay Interest Rate	3.50%	3.36%
Weighted Average Variable Interest Rate	3.90%	3.87%
Swap \| Over 60 months to 72 months
Derivative [Line Items]
Notional Amount	$ 417,200	$ 0
Weighted Average Fixed-Pay Interest Rate	3.58%	0.00%
Weighted Average Variable Interest Rate	3.90%	0.00%
Swap \| Over 72 months
Derivative [Line Items]
Notional Amount	$ 1,385,200	$ 827,300
Weighted Average Fixed-Pay Interest Rate	3.74%	3.36%
Weighted Average Variable Interest Rate	3.90%	3.87%
ERIS Swap Futures
Derivative [Line Items]
Notional Amount	$ 4,000,000	$ 2,400,000
Interest Rate Swap
Derivative [Line Items]
Notional Amount	$ 2,100,000	$ 2,100,000

Average fixed interest rate related to the group of interest rate derivatives.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-5

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+ References

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-5A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (c)
-Publisher FASB
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
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-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

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