Collaboration Agreement (Narrative) (Details) $ in Millions	9 Months Ended
Sep. 30, 2015 USD ($)
Calico
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Payments for interest in joint venture	$ 240
Research commitment \| Calico
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Payments for interest in joint venture	250
Research commitment	500
Research commitment \| Google Inc
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Research commitment	490
Research commitment \| AbbVie Inc
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Accumulated payments for interests in joint venture	$ 750

The accumulated cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

No definition available.

+ Details

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

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- Definition

The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

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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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