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Identifiable Intangible Assets and Goodwill - Finite-lived and Indefinite-lived Intangible Assets - Footnotes (Details) - USD ($) $ in Millions | Oct. 01, 2017 | Dec. 31, 2016
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Finite-Lived Intangible Assets [Line Items] |  |  |
Increase in finite-lived intangible assets |  | $ 37,492 | $ 35,664
Developed Technology Rights [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Increase in finite-lived intangible assets | [1] | 35,625 | $ 33,740
Eucrisa [Member] | Developed Technology Rights [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Transfer of intangible assets during period |  | 4,800 |
Besponsa [Member] | Developed Technology Rights [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Increase in finite-lived intangible assets |  | 371 |
In Process Research and Development [Member] | Eucrisa [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Transfer of intangible assets during period |  | $ (4,800) |
[1] | The changes in the gross carrying amount of Developed technology rights and IPR&D primarily reflect (i) the transfer of $4.8 billion from IPR&D to Developed technology rights to reflect the approval of Eucrisa, (ii) the Developed technology rights and IPR&D acquired as part of the acquisition of AstraZeneca’s small molecule anti-infectives business (see Note 2A), (iii) the Developed technology rights of $371 million recorded in connection with the EU and U.S. approvals of Besponsa (see Note 7E), partially offset by (iv) measurement period adjustments related to Medivation (see Note 2A) and (v) impairments of Developed technology rights (see Note 4).

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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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