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Stock Compensation - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Stock compensation
Stock compensation expense	$ 54.5	$ 46.5	$ 107.9	$ 90.3
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)	34.5		$ 34.5
Vesting period of recognition of the unrecognized compensation cost of nonvested awards			1 year 1 month 6 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)	175.0		$ 175.0
Vesting period of recognition of the unrecognized compensation cost of nonvested awards			1 year 7 months 6 days
Performance Shares
Stock compensation
Stock compensation expense	2.7	0.1	$ 9.2	1.9
Unrecognized compensation cost for nonvested option (in dollars)	28.2		$ 28.2
Vesting period of recognition of the unrecognized compensation cost of nonvested awards			1 year 4 months 24 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	32.8	28.1	$ 63.8	54.4
Selling, General and Administrative Expenses
Stock compensation
Stock compensation expense	20.9	17.7	42.5	34.6
Cost of Sales
Stock compensation
Stock compensation expense	$ 0.8	$ 0.7	$ 1.6	$ 1.3