Commitments and Contingencies (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2023	Dec. 31, 2022
Loss Contingencies [Line Items]
Funded loans unpaid principal	$ 40,300.0
Letters of credit outstanding	220.0
Accrued loan loss	67.9	$ 65.1
Assets available for recourse	967.5
Guarantees total	172.9
Commitments to investment in future real estate investment	$ 89.1
Maximum Future Commitments Equity In Real Estate Investment, Percent	2.00%
Commitments to investment in future real estate investment	0.50
Commitment to investment in consolidated projects	$ 149.8
Commitments to investment in unconsolidated real estate subsidiary	78.4
Warehouse Receivable
Loss Contingencies [Line Items]
Warehouse receivables	517.0
Funded loans subject to loss sharing arrangements
Loss Contingencies [Line Items]
Funded loans unpaid principal	36,800.0
Letters of credit outstanding	125.0	113.0
SBL Program
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 5.0	$ 5.0
Percentage of maximum original principal amount loan loss	10.00%
Funded loans not subject to loss sharing arrangements
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 130.0

Assets available for recourse under the Fannie Mae DUS lender program.

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The reporting entity's aggregate commitments to fund future co-investments with its clients in certain real estate investments.

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The reporting entity's estimate of loss sharing reserves on loans originated that are subject to a loss sharing arrangement with a third party.

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Other Commitment, Capital Investment In Consolidated Projects

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Maximum original principal amount loan loss percentage.

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Real Estate Investments, Maximum Equity In Real Estate Investment, Percent

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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