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Collaborations (Bayer HealthCare Pharmaceuticals Inc.) (Details) - Bayer [Member] - Nexavar [Member] $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($) country | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |  |
Number of countries product is marketed and sold | country | 100 |  |
Collaboration, royalty percentage in the high 30s | 30.00% |  |
Percentage of net profits after deducting certain partner related costs | 50.00% |  |
Other revenues [Member] |  |  |
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |  |
Collaboration profit | $ 161 | $ 167 | $ 257
Royalty income | $ 133 | $ 137 | $ 72

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- Definition Revenue earned during the period from the leasing or otherwise lending to a third party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. Examples of property from which royalties may be derived include patents and oil and mineral rights. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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