Acquisitions - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Business Acquisition [Line Items]
Finite-Lived Intangible Assets, Net	$ 66.8	$ 81.4
Goodwill	$ 1,100.9	1,100.9
Number of operating segments | segment	1
Acquisition related expenses	$ 0.0	0.0	$ 118.9
Core Deposits Intangibles
Business Acquisition [Line Items]
Finite-Lived Intangible Assets, Net	$ 49.5	$ 62.2