Derivatives and Hedging Activities - Schedule of Notional Amounts of Outstanding Derivative Positions (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Derivative Assets (included in other assets on the consolidated balance sheets):
Derivative Asset, Notional Amount	$ 1,140.8	$ 1,201.0
Derivative Asset, Estimated Fair Value	27.1	26.6
Derivative Liabilities (included in accounts payable and accrued expenses on the consolidated balance sheets):
Derivative Liabilities, Notional Amount	1,189.3	1,269.5
Derivative Liabilities, Estimated Fair Value	76.8	77.3
Not Designated as Hedging Instrument | Interest rate swap contracts
Derivative Assets (included in other assets on the consolidated balance sheets):
Derivative Asset, Notional Amount	1,126.0	1,199.0
Derivative Asset, Estimated Fair Value	27.0	26.6
Derivative Liabilities (included in accounts payable and accrued expenses on the consolidated balance sheets):
Derivative Liabilities, Notional Amount	1,126.0	1,204.9
Derivative Liabilities, Estimated Fair Value	76.8	77.3
Not Designated as Hedging Instrument | Interest rate lock commitments
Derivative Assets (included in other assets on the consolidated balance sheets):
Derivative Asset, Notional Amount	6.5	1.0
Derivative Asset, Estimated Fair Value	0.1	0.0
Not Designated as Hedging Instrument | Forward loan sales contracts
Derivative Assets (included in other assets on the consolidated balance sheets):
Derivative Asset, Notional Amount	$ 8.3	$ 1.0