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Other Income, Net (Schedule of Foreign Exchange Gain (Loss)) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Foreign Currency Exchange Gain (Loss) [Line Items] |  |  |  |  |  |
Net exchange (losses) gains |  | $ (15) | $ 11 | $ (136) | $ 90 | [1]
Net exchange (losses) gains, tax |  | (2) | 31 | 66 | (178) |
Net exchange (losses) gains, after-tax |  | (17) | 42 | (70) | (88) |
Subsidiary Monetary Position Gain (Loss) [Member] |  |  |  |  |  |
Foreign Currency Exchange Gain (Loss) [Line Items] |  |  |  |  |  |
Net exchange (losses) gains | [2] | 146 | 29 | 179 | (171) |
Net exchange (losses) gains, tax |  | (60) | 25 | (47) | (84) |
Net exchange (losses) gains, after-tax |  | 86 | 54 | 132 | (255) |
Hedging Program Gain (Loss) [Member] |  |  |  |  |  |
Foreign Currency Exchange Gain (Loss) [Line Items] |  |  |  |  |  |
Net exchange (losses) gains |  | (161) | (18) | (315) | 261 |
Net exchange (losses) gains, tax |  | 58 | 6 | 113 | (94) |
Net exchange (losses) gains, after-tax |  | $ (103) | $ (12) | $ (202) | $ 167 |
[1] | Includes a charge of $(40) associated with re-measuring the company's Ukrainian hryvnia net monetary assets in the six months ended June 30, 2015, which was recorded in other income, net in the company's interim Consolidated Income Statements.
[2] | Excludes equity affiliates.

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