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Significant Accounting Policies - Variable Interest Entity (Details) - Variable Interest Entity, Primary Beneficiary - Terms Of Generic Sourcing Venture $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jul. 31, 2014 | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Oct. 31, 2014 payment
Variable Interest Entity |  |  |  |  |
Ownership percentage by noncontrolling owners |  | 50.00% |  |  |
Ownership percentage by parent |  | 50.00% |  |  |
Initial contractual term (in years) | 10 years |  |  |  |
Number of quarterly payments due (in quarterly payments) | payment |  |  |  |  | 39
Increase in contractual obligation payment received | $ |  | $ 183 | $ 163 | $ 122 |

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- Definition Number of Quarterly Payments Due + References No definition available. + Details
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- Definition Variable Interest Entity, Contractual Obligation, Payment Received + References No definition available. + Details
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- Definition Variable Interest Entity, Initial Contractual Term + References No definition available. + Details
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- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
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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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- Details
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- Details
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Period Type: |