Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	$ 0	$ 0	$ 0
Impairment of core deposits and intangibles	0	0	0
Net impairment (recovery of impairment) on loan servicing rights	0	0
Amortization expense - other intangible assets	35,000,000.0	$ 39,800,000	37,800,000
Residential mortgage
Finite-Lived Intangible Assets [Line Items]
Aggregate principal balances of mortgage loans serviced	$ 3,300,000,000		$ 3,500,000,000
Core deposits
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period, years		10 years
Other
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period, years		13 years 6 months