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Financial Instruments (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Derivatives, Fair Value [Line Items] |  |  |
Derivatives designated as hedging instruments, Asset Derivatives | $ 16 |  | $ 22
Derivatives not designated as hedging instruments, Asset Derivatives | 54 |  | 63
Derivatives designated as hedging instruments, Liability Derivatives | 117 |  | 194
Derivatives not designated as hedging instruments, Liability Derivatives | 84 |  | 92
Four Quarter Rolling Average of Notional Amount of Foreign Exchange Contracts Hedging Foreign Currency Transactions | $ 18,100 |  | 20,100
Description of Net Investment Hedge Activity | We have approximately €4.95 billion of euro-denominated long-term debt and €750 million of euro-denominated commercial paper borrowings outstanding, which qualify as a net investment hedge against our investments in European businesses. As of March 31, 2019, the net investment hedge is deemed to be effective. |  |
Gain (loss) recorded in Accumulated other comprehensive loss | $ 7 | $ 45 |
(Gain) loss reclassified from Accumulated other comprehensive loss into Product Sales (effective portion) | $ 4 | (27) |
Maximum Length of Time, Foreign Currency Cash Flow Hedge | 4 years 22 days |  |
Gain recognized in Other income, net | $ 18 | $ 51 |
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months | 49 |  |
Other Current Assets [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivatives designated as hedging instruments, Asset Derivatives | 6 |  | 10
Derivatives not designated as hedging instruments, Asset Derivatives | 42 |  | 44
Other Noncurrent Assets [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivatives designated as hedging instruments, Asset Derivatives | 10 |  | 12
Derivatives not designated as hedging instruments, Asset Derivatives | 12 |  | 19
Accrued Liabilities [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivatives designated as hedging instruments, Liability Derivatives | 54 |  | 83
Derivatives not designated as hedging instruments, Liability Derivatives | 47 |  | 89
Other Long-term Liabilities [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivatives designated as hedging instruments, Liability Derivatives | 63 |  | 111
Derivatives not designated as hedging instruments, Liability Derivatives | $ 37 |  | $ 3

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