Employee Benefits - Schedule of Share-Based Compensation Expense Under the 2014 Omnibus Incentive Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 19.4	$ 15.9	$ 13.8
2014 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	19.4	15.9	13.8
2014 Omnibus Incentive Plan | Common Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	6.8	7.1	6.2
2014 Omnibus Incentive Plan | Common Stock Awards | Non-Employee Common Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	0.8	0.7	0.5
2014 Omnibus Incentive Plan | Performance-Based Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	6.9	6.3	5.4
2014 Omnibus Incentive Plan | Liability Performance-Based Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	3.0	0.3	0.5
2014 Omnibus Incentive Plan | Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense	$ 1.9	$ 1.5	$ 1.2