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Stock Compensation - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Stock compensation |  |
Stock compensation expense | $ 53.4 | $ 43.8
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) | $ 42.3 |
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) | $ 202.8 |
Vesting period of recognition of the unrecognized compensation cost of nonvested awards | 1 year 9 months 18 days |
Performance Shares |  |
Stock compensation |  |
Stock compensation expense | $ 6.5 | 1.8
Unrecognized compensation cost for nonvested option (in dollars) | $ 24.1 |
Vesting period of recognition of the unrecognized compensation cost of nonvested awards | 1 year 8 months 12 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 | $ 31.0 | 26.3
Selling, General and Administrative Expenses |  |
Stock compensation |  |
Stock compensation expense | 21.6 | 16.9
Cost of Sales |  |
Stock compensation |  |
Stock compensation expense | $ 0.8 | $ 0.6

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