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Fair Value Measurements - Schedule of Effect of Net Investment Hedges (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2018 | Jul. 02, 2017 | Jul. 01, 2018 | Jul. 02, 2017
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain/(Loss) Recognized In Accumulated OCI | $ 306 | $ (268) | $ 156 | $ (378)
Sale of Subsidiary Gain (Loss) [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain/(Loss) Reclassified From Accumulated OCI Into Income | 0 | 0 | 0 | 0
Other Income Expense Net [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain/(Loss) Reclassified From Accumulated OCI Into Income | 0 | 0 | 0 | 0
Cross Currency Interest Rate Contract [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain/(Loss) Recognized In Accumulated OCI | $ 37 | $ 0 | $ 37 | $ 0

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