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Other Consolidated Financial Statement Detail (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Equity Securities, FV-NI, Gain (Loss) | $ 200.1 | $ 127.9 | $ (19.8) |
Equity Securities, FV-NI, Realized Gain (Loss) | 50.0 | (0.6) | 0.0 |
Equity Securities, FV-NI, Unrealized Gain (Loss) | 150.1 | 128.5 | (19.8) |
Cash Paid During the Year |  |  |  |
Interest | 244.2 | 243.2 | 281.7 |
Income taxes | 1,064.5 | 1,007.1 | 1,066.4 |
Other Nonoperating Income (Expense) [Abstract] |  |  |  |
Interest income | 120.0 | 112.5 | 78.5 |
Interest expense | 187.4 | 200.6 | 250.8 |
Gain (loss) on investments, net | 204.7 | 119.5 | (36.3) |
Foreign exchange gains (losses), net | (7.0) | (9.9) | 6.3 |
Other income (expense) | (47.0) | (10.5) | (14.7) |
Total other income (expense), net | 83.3 | 11.0 | (217.0) |
Accrued Liabilities, Current [Abstract] |  |  |  |
Revenue related reserves for discounts and allowances | 1,198.9 | 1,051.3 | $ 761.6 | $ 605.5
Employee compensation and benefits | 309.1 | 320.9 |  |
Collaboration expenses | 281.6 | 261.6 |  |
Royalties and licensing fees | 220.9 | 224.7 |  |
Current portion of contingent consideration obligations | 148.4 | 444.8 |  |
Accrued construction in progress | 78.0 | 125.2 |  |
Other | 726.7 | 609.3 |  |
Accrued expenses and other | 2,765.8 | 2,861.2 |  |
Other Current Liabilities |  |  |  |
Accrued Liabilities, Current [Abstract] |  |  |  |
Revenue related reserves for discounts and allowances | $ 1,001.1 | $ 874.7 |  |

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