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Other Intangibles - Indefinite-Lived Intangible Assets Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016
Indefinite-lived Intangible Assets [Line Items]
In-process research and development impairment charges	$ 245	$ 253	$ 225
uprifosbuvir
Indefinite-lived Intangible Assets [Line Items]
In-process research and development impairment charges	$ 240	$ 240
House Dust Mite
Indefinite-lived Intangible Assets [Line Items]
In-process research and development impairment charges			$ 112

X

- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275

+ Details

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X

- 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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- Details

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- Details

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