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Acquisitions, Sale of Hospira Infusion Systems Net Assets, Collaborative Arrangement and Equity-Method Investments - Medivation (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 28, 2016 | Oct. 01, 2017 | Oct. 01, 2017 | Oct. 01, 2017 | Dec. 31, 2016
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill | [1] |  | $ 56,078 | $ 56,078 | $ 56,078 | $ 54,449
Medivation [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business acquisition, per share in cash (in dollars per share) |  | $ 81.50 |  |  |  |
Consideration transferred in business acquisition |  | $ 14,300 |  |  |  |
Consideration transferred in business acquisition, net of cash acquired |  | 13,900 |  |  |  |
Amount payable |  |  |  |  |  | $ 365
Identifiable intangible assets |  | 12,200 |  |  |  |
Goodwill |  | 6,100 |  |  |  |
Deferred tax liabilities |  | 4,000 |  |  |  |
Contingent consideration assumed |  | 259 |  |  |  |
Reduction in intangible assets due to measurement period adjustments |  |  |  |  | $ 1,000 |
Decrease in amortization of intangible assets due to measurement period adjustments |  |  | $ 38 | $ 38 |  |
Medivation [Member] | In Process Research and Development [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Identifiable intangible assets |  | 4,100 |  |  |  |
Medivation [Member] | Developed Technology Rights [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Identifiable intangible assets |  | $ 8,100 |  |  |  |
Acquired intangible assets, average useful life |  | 12 years |  |  |  |
[1] | Amounts may not add due to rounding.

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