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Other Assets - TBA Securities (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Derivative [Line Items] |  |  |  |  |
Notional Amount | $ 3,200,000,000 |  | $ 3,200,000,000 |  |
TBA Securities | Short |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Aggregate value |  |  |  |  | $ (1,300,000)
Gain on derivative | $ 20,300,000 | $ 1,100,000 | $ 39,200,000 | $ 1,100,000 |
FNCL 2.5 | Short |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount |  |  |  |  | 180,000,000
FNCL 2 | Short |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional Amount |  |  |  |  | $ 130,000,000

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