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Stock Compensation - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Jan. 31, 2024
Stock compensation |  |  |  |  |
Stock compensation expense | $ 56.6 | $ 54.5 | $ 116.4 | $ 107.9 |
Dividend yield (as a percent) |  |  | 0.00% |  |
Assumed annualized forfeiture rate (as a percent) |  |  | 5.00% |  |
Escient |  |  |  |  |
Stock compensation |  |  |  |  |
Asset acquisition, compensation expense | 31.5 |  |  |  |
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) | 24.1 |  | $ 24.1 |  |
Vesting period of recognition of the unrecognized compensation cost of nonvested awards |  |  | 1 year |  |
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) | 165.1 |  | $ 165.1 |  |
Vesting period of recognition of the unrecognized compensation cost of nonvested awards |  |  | 1 year 4 months 24 days |  |
Performance Shares |  |  |  |  |
Stock compensation |  |  |  |  |
Stock compensation expense | 3.5 | 2.7 | $ 6.9 | 9.2 |
Unrecognized compensation cost for nonvested option (in dollars) | 10.1 |  | $ 10.1 |  |
Vesting period of recognition of the unrecognized compensation cost of nonvested awards |  |  | 1 year |  |
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 | 34.5 | 32.8 | $ 71.3 | 63.8 |
Selling, General and Administrative Expenses |  |  |  |  |
Stock compensation |  |  |  |  |
Stock compensation expense | 21.7 | 20.9 | 44.1 | 42.5 |
Cost of Sales |  |  |  |  |
Stock compensation |  |  |  |  |
Stock compensation expense | $ 0.4 | $ 0.8 | $ 1.0 | $ 1.6 |
2024 Inducement Plan |  |  |  |  |
Stock compensation |  |  |  |  |
Shares reserved for future issuance (in shares) |  |  |  |  | 1,000,000

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