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Subsequent events | 12 Months Ended
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Dec. 31, 2019
Subsequent Events [Abstract] |
Subsequent events | Subsequent events On January 2, 2020, Amgen acquired a 20.5% stake in BeiGene, Ltd. (BeiGene) for approximately $2.8 billion in cash as part of a collaboration to expand our oncology presence in China. We will account for this investment by using the equity method. Under the collaboration, BeiGene will commercialize XGEVA®, KYPROLIS® and BLINCYTO® (blinatumomab) in China, and we will share profits and losses equally during the initial product-specific commercialization periods; thereafter, two of these products will revert to Amgen, and Amgen will pay royalties to BeiGene on sales in China of such products for a specified period. In addition, Amgen and BeiGene will jointly develop 20 of our oncology product candidates, with BeiGene sharing in global R&D costs of up to $1.25 billion and assuming commercialization rights in China for a specified period. Amgen and BeiGene will share profits in China equally until certain of these product rights revert to Amgen. After reversion, Amgen will pay royalties to BeiGene on sales in China for a specified period. For product sales outside of China, Amgen will pay BeiGene royalties.

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -URI http://asc.fasb.org/topic&trid=2122774 + Details
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