Financial Instruments (Details) (Summary of Derivative Instruments) - USD ($) $ in Millions |
Dec. 30, 2017 |
Dec. 31, 2016 |
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| Fair Value, Inputs, Level 2 | Foreign Currency Forward Contracts | Contracts Designated as Cash Flow Hedging Instruments | ||
| Derivative [Line Items] | ||
| Contracts designated as cash flow hedging instruments | $ 7 | $ (2) |
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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. No definition available.
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- Definition Fair value as of the balance sheet date of all derivatives designated as foreign currency fair value hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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