Other Assets - TBA Securities (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Notional Amount	$ 3,200,000,000
TBA Securities | Short
Derivative [Line Items]
Aggregate value		$ (1,300,000)
UMBS 2.5 | Short
Derivative [Line Items]
Notional Amount		180,000,000
UMBS 2.0 | Short
Derivative [Line Items]
Notional Amount		$ 130,000,000