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Derivative Financial Instruments - Schedule of Fair Value and Notional Amount of Derivatives (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Derivative [Line Items]
Fair Value	$ 40,901	$ 22,343
Notional Amount	25,518,093	12,215,873
Derivative Liabilities
Derivative [Line Items]
Fair Value	(57,047)	(23,660)
Notional Amount	11,222,488	2,338,485
Derivative Assets
Derivative [Line Items]
Fair Value	97,948	46,003
Notional Amount	14,295,605	9,877,388
TBAs | Derivative Liabilities
Derivative [Line Items]
Fair Value	(27,722)	(16,249)
Notional Amount	6,365,000	1,350,000
TBAs | Derivative Assets
Derivative [Line Items]
Fair Value	25,583	0
Notional Amount	4,545,000	0
Interest rate futures | Derivative Liabilities
Derivative [Line Items]
Fair Value	(21,108)	(6,915)
Notional Amount	3,585,700	830,500
Interest rate futures | Derivative Assets
Derivative [Line Items]
Fair Value	2,573	16,446
Notional Amount	589,500	712,500
Swaptions | Derivative Assets
Derivative [Line Items]
Fair Value	35,352	23,738
Notional Amount	6,400,000	8,245,000
LPCs and IRLCs | Derivative Liabilities
Derivative [Line Items]
Fair Value	(8,217)	(496)
Notional Amount	1,271,788	157,985
LPCs and IRLCs | Derivative Assets
Derivative [Line Items]
Fair Value	34,440	5,819
Notional Amount	$ 2,761,105	$ 919,888

X

- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
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-Section 50
-Paragraph 5
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Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
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-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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