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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASURES 5 (Details) - Designated as Hedging Instrument [Member] - Long-term debt [Member] - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Summary Of Derivative Instruments By Hedge Designation [Line Items] |  |
Carrying Amount of the Hedged Item | $ 3,975 | $ 2,555
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Item | $ 25 | $ (45)

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