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Summary of Accounting Principles (Collaborative Arrangements) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |
Collaborators interests existing programs low end | 13.00% |  |
Collaborators interests existing programs high end | 49.00% |  |
Partner share individual program maximum | 31.00% |  |
Cost of Products Sold [Member] |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |
Collaborator Share Of Sales | $ 2,097 | $ 1,688 | $ 1,789
Collaborator Share Of Program Costs | 190 | 209 | 143
Cost of Services Sold [Member] |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |
Collaborator Share Of Sales | 1,674 | 1,765 | 929
Research and Development [Member] |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |
Collaborator Share Of Program Costs | 219 | 225 | 190
Selling General and Administrative [Member] |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |
Collaborator Share Of Program Costs | $ 101 | $ 87 | $ 74

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Income statement amounts attributable to program costs transactions arising from the collaborative arrangement between participants for each period an income statement is presented. + References No definition available. + Details
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- Details
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- Details
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