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Stock Compensation - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Stock compensation
Stock compensation expense	$ 48.0	$ 45.4	$ 155.9	$ 135.7
Dividend yield (as a percent)			0.00%
Assumed annualized forfeiture rate (as a percent)			5.00%
Share-based Payment Arrangement, Option
Stock compensation
Stock option grant term			10 years
Vesting period			4 years
Percentage of units vesting at the end of each calendar year (as a percent)			25.00%
Unrecognized compensation cost for nonvested option (in dollars)	37.1		$ 37.1
Vesting period of recognition of the unrecognized compensation cost of nonvested awards			1 year 2 months 12 days
Share-based Payment Arrangement, Option \| Share-based Payment Arrangement, Tranche One
Stock compensation
Vesting period			1 year
Share-based Payment Arrangement, Option \| Share-based Payment Arrangement, Tranche Two
Stock compensation
Vesting period			36 months
Restricted Stock Units (RSUs)
Stock compensation
Vesting period			4 years
Percentage of units vesting at the end of each calendar year (as a percent)			25.00%
Number of shares awarded for each RSU (in shares)			1
Unrecognized compensation cost for nonvested option (in dollars)	278.1		$ 278.1
Vesting period of recognition of the unrecognized compensation cost of nonvested awards			2 years
Performance Shares
Stock compensation
Stock compensation expense	4.2	3.2	$ 13.4	5.1
Unrecognized compensation cost for nonvested option (in dollars)	24.1		$ 24.1
Vesting period of recognition of the unrecognized compensation cost of nonvested awards			2 years 1 month 6 days
Performance Shares \| Minimum
Stock compensation
Vesting period			3 years
Performance Shares \| Maximum
Stock compensation
Vesting period			4 years
Research and Development Expense
Stock compensation
Stock compensation expense	26.9	25.8	$ 90.7	80.2
Selling, General and Administrative Expenses
Stock compensation
Stock compensation expense	20.3	18.9	62.8	53.5
Cost of Sales
Stock compensation
Stock compensation expense	$ 0.8	$ 0.7	$ 2.4	$ 2.0