Derivative Instruments and Hedging Activities - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($)
|
Sep. 30, 2024 |
Jun. 30, 2024 |
Dec. 31, 2023 |
Sep. 30, 2023 |
Jun. 30, 2023 |
Dec. 31, 2022 |
| TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
$ (15,779,095,000)
|
$ (10,588,481,000)
|
$ (15,045,799,000)
|
$ (2,841,022,000)
|
$ (5,383,706,000)
|
|
| Net Short Position |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
|
|
|
|
|
$ (14,262,996,000)
|
| Inverse interest-only securities | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(142,011,000)
|
(149,152,000)
|
(163,735,000)
|
(171,507,000)
|
(179,542,000)
|
(196,456,000)
|
| Interest rate swap agreements | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(14,197,205,000)
|
(11,739,471,000)
|
(17,788,114,000)
|
(8,545,965,000)
|
(8,977,714,000)
|
0
|
| Swaptions, net | Net Short Position |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
0
|
0
|
(200,000,000)
|
(200,000,000)
|
(200,000,000)
|
0
|
| TBAs | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(5,064,000,000)
|
(4,983,000,000)
|
(3,497,000,000)
|
(2,194,000,000)
|
(3,051,000,000)
|
(3,826,000,000)
|
| Futures, net |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
0
|
|
0
|
|
|
|
| Futures, net | Net Short Position |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(3,693,900,000)
|
(6,308,900,000)
|
(6,203,050,000)
|
(7,870,450,000)
|
(6,624,550,000)
|
(18,285,452,000)
|
| Interest rate lock commitments |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
500,000
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(33,381,000)
|
(12,879,000)
|
0
|
0
|
0
|
0
|
| Forward mortgage loan sale commitments |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
29,000
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(36,398,000)
|
$ (12,879,000)
|
0
|
$ 0
|
$ 0
|
$ 0
|
| Derivative Assets |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
12,572,000
|
|
85,291,000
|
|
|
|
| Derivative Assets | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(168,178,000)
|
|
(2,942,735,000)
|
|
|
|
| Derivative Assets | Inverse interest-only securities |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
11,842,000
|
|
12,292,000
|
|
|
|
| Derivative Assets | Inverse interest-only securities | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(142,011,000)
|
|
(163,735,000)
|
|
|
|
| Derivative Assets | Interest rate swap agreements |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
0
|
|
0
|
|
|
|
| Derivative Assets | Interest rate swap agreements | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
0
|
|
0
|
|
|
|
| Derivative Assets | Swaptions, net |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
0
|
|
19,000
|
|
|
|
| Derivative Assets | Swaptions, net | Net Short Position |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
0
|
|
(200,000,000)
|
|
|
|
| Derivative Assets | TBAs |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
184,000
|
|
72,980,000
|
|
|
|
| Derivative Assets | TBAs | TBAs, net |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
185,000
|
|
72,980,000
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(34,000,000)
|
|
(2,979,000,000)
|
|
|
|
| Derivative Assets | Futures, net |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
0
|
|
0
|
|
|
|
| Derivative Assets | Futures, net | Net Short Position |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
0
|
|
0
|
|
|
|
| Derivative Assets | Interest rate lock commitments |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
478,000
|
|
0
|
|
|
|
| Derivative Assets | Interest rate lock commitments | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(33,381,000)
|
|
0
|
|
|
|
| Derivative Assets | Forward mortgage loan sale commitments |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
68,000
|
|
0
|
|
|
|
| Derivative Assets | Forward mortgage loan sale commitments | Net Short Position |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(26,786,000)
|
|
0
|
|
|
|
| Derivative Liabilities |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
(16,764,000)
|
|
(21,506,000)
|
|
|
|
| Derivative Liabilities | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
|
|
(12,103,064,000)
|
|
|
|
| Derivative Liabilities | Net Short Position |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(15,610,917,000)
|
|
|
|
|
|
| Derivative Liabilities | Inverse interest-only securities |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
0
|
|
0
|
|
|
|
| Derivative Liabilities | Inverse interest-only securities | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
0
|
|
0
|
|
|
|
| Derivative Liabilities | Interest rate swap agreements |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
0
|
|
0
|
|
|
|
| Derivative Liabilities | Interest rate swap agreements | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(14,197,205,000)
|
|
(17,788,114,000)
|
|
|
|
| Derivative Liabilities | Swaptions, net |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
0
|
|
0
|
|
|
|
| Derivative Liabilities | Swaptions, net | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
0
|
|
0
|
|
|
|
| Derivative Liabilities | TBAs |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
(16,725,000)
|
|
(21,506,000)
|
|
|
|
| Derivative Liabilities | TBAs | TBAs, net |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
(16,725,000)
|
|
(21,506,000)
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(5,098,000,000)
|
|
(518,000,000)
|
|
|
|
| Derivative Liabilities | Futures, net |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
0
|
|
0
|
|
|
|
| Derivative Liabilities | Futures, net | Net Short Position |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
(3,693,900,000)
|
|
(6,203,050,000)
|
|
|
|
| Derivative Liabilities | Interest rate lock commitments |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
0
|
|
0
|
|
|
|
| Derivative Liabilities | Interest rate lock commitments | TBAs, net |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
0
|
|
0
|
|
|
|
| Derivative Liabilities | Forward mortgage loan sale commitments |
|
|
|
|
|
|
| Derivative, Fair Value, Net [Abstract] |
|
|
|
|
|
|
| Fair Value |
(39,000)
|
|
0
|
|
|
|
| Derivative Liabilities | Forward mortgage loan sale commitments | Net Short Position |
|
|
|
|
|
|
| Notional Disclosures [Abstract] |
|
|
|
|
|
|
| Notional Amount |
$ (9,612,000)
|
|
$ 0
|
|
|
|