Derivative Instruments - Schedule of TBA Contracts (Details) $ in Thousands	Sep. 30, 2026 USD ($)
TBAs
Derivative [Line Items]
Notional Amount	$ (1,850,000)
Fair Value	$ (4,332)
To Be Announced Securities, 5.50% Coupon Rate \| Long
Derivative [Line Items]
Derivative fixed interest rate	5.50%
Notional Amount	$ 50,000
Fair Value	$ (8,453)
To Be Announced Securities, 6.00% Coupon Rate \| Short
Derivative [Line Items]
Derivative fixed interest rate	6.00%
Notional Amount	$ (800,000)
Fair Value	$ 4,121
To Be Announced Securities, 6.50% Coupon Rate \| Short
Derivative [Line Items]
Derivative fixed interest rate	6.50%
Notional Amount	$ (1,100,000)
Fair Value	0
Cost Basis \| TBAs
Derivative [Line Items]
Cost Basis	(1,839,293)
Cost Basis \| To Be Announced Securities, 5.50% Coupon Rate \| Long
Derivative [Line Items]
Cost Basis	56,156
Cost Basis \| To Be Announced Securities, 6.00% Coupon Rate \| Short
Derivative [Line Items]
Cost Basis	(788,746)
Cost Basis \| To Be Announced Securities, 6.50% Coupon Rate \| Short
Derivative [Line Items]
Cost Basis	(1,106,703)
Fair Value \| TBAs
Derivative [Line Items]
Fair Value	(1,843,625)
Fair Value \| To Be Announced Securities, 5.50% Coupon Rate \| Long
Derivative [Line Items]
Fair Value	47,703
Fair Value \| To Be Announced Securities, 6.00% Coupon Rate \| Short
Derivative [Line Items]
Fair Value	(784,625)
Fair Value \| To Be Announced Securities, 6.50% Coupon Rate \| Short
Derivative [Line Items]
Fair Value	$ (1,106,703)

Derivative Assets (Liabilities), At Cost Basis, Net

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- Definition

Nominal or face amount used to calculate payments on the derivative asset.

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Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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

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- Definition

Fixed interest rate related to the interest rate derivative.

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- Definition

Nominal or face amount used to calculate payments on the derivative liability.

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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.

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