Restructuring, Business Transformation and Other Cost Saving Initiatives - Total Charges cost saving initiative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 30.2	$ 218.8	$ 131.1
Severance Costs | 2022 Cost Saving Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(2.2)	112.6
Accelerated Depreciation and Other Costs | 2022 Cost Saving Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges		2.6	18.5
Accelerated Depreciation and Other Costs | 2022 Cost Saving Initiative | Restructuring charges
Restructuring Cost and Reserve [Line Items]
Gain (loss) on termination of lease	$ 5.3
Workforce Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring charges		30.2	181.6
Workforce Reduction | 2022 Cost Saving Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 0.4	$ 131.1