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Financial Instruments and Risk Management - Notional Amounts of Outstanding Derivative Instruments (Detail) - Designated as Hedging Instrument [Member] | Dec. 31, 2017 USD ($) | Dec. 31, 2017 EUR (€) | Dec. 31, 2017 SGD | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
--- | --- | --- | --- | --- | ---
Derivative [Line Items] |  |  |  |  |
Notional amount | $ | $ 1,393,000,000 |  |  | $ 1,370,000,000 | $ 1,449,000,000
Foreign Exchange Forward Contracts [Member] | R&D and Other Operating Expense [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional amount |  | € 237,000,000 |  |  |
Foreign Exchange Forward Contracts [Member] | Manufacturing Costs [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional amount |  | 352,000,000 | SGD 130,000,000 |  |
Currency Collars [Member] | R&D and Other Operating Expense [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional amount |  | 208,000,000 |  |  |
Currency Collars [Member] | Manufacturing Costs [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional amount |  | € 284,000,000 |  |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + 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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