Employees - Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Retirement Benefits [Abstract]
Interest cost	$ 5.0	$ 5.3	$ 3.7
Expected return on plan assets	(5.1)	(5.4)	(5.2)
Amortization of net gain	0.0	(0.1)	0.0
Net periodic benefit	$ (0.1)	$ (0.2)	$ (1.5)