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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Dispositions (Details) ₩ in Millions, $ in Millions	1 Months Ended	12 Months Ended
Dispositions (Details) ₩ in Millions, $ in Millions	Apr. 30, 2022 USD ($)	Dec. 31, 2023 USD ($) payment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2022 KRW (₩)	Feb. 29, 2012 USD ($)	Feb. 29, 2012 KRW (₩)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of equity interest in Samsung Bioepis		$ (291.2)	$ (277.3)	$ (824.9)
Samsung Bioepis
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage					49.90%	15.00%	15.00%
Amount sold	$ 2,300.0
Investment in Samsung Bioepis						$ 45.0	₩ 49,500.0
Samsung Bioepis \| Fair Value, Recurring
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other current assets, receivable		$ 430.0	798.8
Samsung Bioepis \| Payment Due At First Anniversary \| Risk-adjusted discount rate \| Fair Value, Recurring
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Risk-adjusted discount rates		5.80%
Samsung Bioepis
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of interest in joint venture	1,000.0
Due from joint venture	1,300.0
Number of payments \| payment		2
Investment in Samsung Bioepis \| ₩					₩ 581.6
Gain on sale of equity interest in Samsung Bioepis		$ 1,500.0
Cumulative translation loss		58.9
Gain on derivative used in net investment hedge		57.0
Additional milestone payment	$ 50.0
Contingent discount on common shares	5.00%
Discrete income tax expense (benefit)		257.9
Samsung Bioepis \| Payment Due At First Anniversary
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Due from joint venture	$ 812.5
Gain (loss) on sale		13.7	10.7
Samsung Bioepis \| Payment Due At Second Anniversary
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Due from joint venture	$ 437.5
Gain (loss) on sale		$ 24.6	$ (1.4)