Governmental Issuer Loans - Additional Information (Details) $ in Millions	Mar. 31, 2023 USD ($) Entities Property	Jan. 01, 2023 USD ($)	Dec. 31, 2022 USD ($) Property
Governmental Issuer Loans [Line Items]
Number of Variable Interest Entities | Property	31		35
Allowance for credit losses		$ 5.9
Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Accrued interest receivable	$ 6.4		$ 3.8
Number of Variable Interest Entities | Entities	2
Outstanding principal	$ 238.8
Allowance for credit losses	2.1
Property Loans [Member]
Governmental Issuer Loans [Line Items]
Outstanding principal	$ 109.8