Share-Based Compensation (Restricted Stock Units and Performance Share Units Granted) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	352,646	346,600	463,476
Weighted Average Grant-Date Fair Value (in dollars per share)	$ 8.97	$ 7.62	$ 6.72
Grant Date Fair Value	$ 3.2	$ 2.6	$ 3.1
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	147,232	154,860	177,176
Weighted Average Grant-Date Fair Value (in dollars per share)	$ 9.84	$ 8.40	$ 7.60
Grant Date Fair Value	$ 1.4	$ 1.3	$ 1.3