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Other Consolidated Financial Statement Detail (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Other Income (Expense), Net |  |  |
Interest income | $ (17.4) | $ (80.9) |
Interest expense | 69.2 | 62.5 |
(Gains) losses on investments, net | 30.6 | 77.7 |
Foreign exchange (gains) losses, net | 9.4 | 10.7 |
Other, net | 1.9 | (0.6) |
Other (income) expense | 93.7 | 69.4 |
Equity Securities, FV-NI, Gain (Loss), Alternative [Abstract] |  |  |
Net (gains) losses recognized on equity securities | 30.6 | 78.1 |
Less: Net (gains) losses realized on equity securities | 4.9 | 1.6 |
Net unrealized (gains) losses recognized on equity securities | 25.7 | 76.5 |
Accrued Expenses and Other |  |  |
Revenue-related reserves for discounts and allowances | 1,096.7 |  | $ 1,062.0
Employee compensation and benefits | 164.1 |  | 335.1
Collaboration expense | 278.0 |  | 214.6
Royalties and licensing fees | 161.5 |  | 191.5
Reata acquisition-related accrued expense | 79.2 |  | 117.5
Other | 714.8 |  | 838.4
Total accrued expense and other | 2,354.6 |  | 2,623.6
Ionis, Sangamo, Denali and Sage |  |  |
Equity Securities, FV-NI, Gain (Loss), Alternative [Abstract] |  |  |
Net unrealized (gains) losses recognized on equity securities | 27.7 | $ 100.0 |
Component of accrued expenses and other |  |  |
Accrued Expenses and Other |  |  |
Revenue-related reserves for discounts and allowances | $ 957.0 |  | $ 926.5

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