Employee Benefit Plans - Net Pension Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Expected Return (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax
United States
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Interest cost	$ 2.4	$ 1.7	$ 1.7
Service cost	0.0	0.0	0.0
Expected return on plan assets	(3.3)	(4.3)	(3.8)
Amortization of net loss	0.9	0.5	1.0
Total net periodic pension income	0.0	$ (2.1)	$ (1.1)
International Plans
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Interest cost	1.2
Service cost	0.7
Expected return on plan assets	(1.3)
Amortization of net loss	0.0
Total net periodic pension income	$ 0.6