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Income Taxes (Details Textual) $ in Millions, ₩ in Billions | Dec. 31, 2022 USD ($) | Jun. 30, 2022 KRW (₩) | Jun. 30, 2022 USD ($) | Dec. 31, 2021 KRW (₩) | Dec. 31, 2021 USD ($) | Sep. 30, 2021 USD ($)
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Income Tax Contingency [Line Items] |  |  |  |  |  |
Deferred tax assets, unrecognized tax benefit |  |  | $ 85.0 |  | $ 390.0 |
Deferred tax assets, net |  |  |  |  |  | $ 490.0
Samsung Bioepis |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Investment in Samsung Bioepis |  | ₩ 0.0 |  | ₩ 713.3 | $ 599.9 |
Forecast |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Decrease in unrecognized tax benefits is reasonably possible | $ 500.0 |  |  |  |  |
Forecast | ADUHELM |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Decrease in unrecognized tax benefits is reasonably possible | $ 455.0 |  |  |  |  |

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