Restructuring - Restructuring Reserve Roll Forward (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Reserve [Roll Forward]
Expense	$ 218.8	$ 131.1	$ 0.0
Workforce Reduction
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	35.9	0.0
Expense	181.6	112.6
Payment	(140.5)	(78.0)
Foreign currency and other adjustments	(1.6)	1.3
Restructuring reserve, ending	$ 75.4	$ 35.9	$ 0.0