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Acquisition, Collaborations and Other Arrangements - Purchase Price Preliminary Allocations (Details) $ in Millions	Oct. 03, 2017 USD ($)
Acquisition, Collaborations And Other Arrangements [Abstract]
Cash and cash equivalents	$ 652
Indefinite-lived intangible assets - in-process research and development (IPR&D)	8,950
Outlicense acquired	91
Deferred income taxes	(1,564)
Other assets acquired (liabilities assumed), net	81
Total identifiable net assets	8,210
Goodwill	2,945
Total consideration transferred	$ 11,155

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Acquisition, Collaborations And Other Arrangements [Abstract]

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Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Other, Net

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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