Commitments and Contingencies - Narrative (Details) $ in Millions	Dec. 31, 2023 USD ($)
Loan Funding Commitments | Commercial and Residential Lending Segment
Commitments and Contingencies
Value of loans with future funding commitments	$ 1,700.0
Value of loans with future funding commitments expected to fund	1,300.0
Loan Funding Commitments | Infrastructure Lending Segment
Commitments and Contingencies
Value of loans with future funding commitments	189.9
Revolvers and Letters of Credit | Infrastructure Lending Segment
Commitments and Contingencies
Value of loans with future funding commitments	124.4
Debt related to properties held-for-sale	5.2
Delayed Draw Term Loans | Infrastructure Lending Segment
Commitments and Contingencies
Value of loans with future funding commitments	65.5
Loan Purchase Commitments | Infrastructure Lending Segment
Commitments and Contingencies
Debt related to properties held-for-sale	$ 37.6