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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 ($)	Sep. 30, 2021 USD ($)
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