Share-Based Compensation - Allocation of Compensation Expense (Benefit) by Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-Based Compensation
Share-based compensation expense (benefit) before taxes	$ 138.5	$ 163.8	$ 45.4
Share-based compensation capitalized as part of inventory	1.0	1.0	0.7
Stock options
Share-Based Compensation
Share-based compensation expense (benefit) before taxes	25.4	44.0	70.5
RSUs
Share-Based Compensation
Share-based compensation expense (benefit) before taxes	24.7	20.5	13.3
STAP awards
Share-Based Compensation
Share-based compensation expense (benefit) before taxes	86.6	97.8	(39.7)
Employee stock purchase plan
Share-Based Compensation
Share-based compensation expense (benefit) before taxes	$ 1.8	$ 1.5	$ 1.3