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Other (Loss) Income, Net (Schedule of Foreign Exchange Gain (Loss)) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Foreign Currency Exchange Gain (Loss) [Line Items] |  |  |  |
Net exchange (losses) gains | $ (140) | $ (15) | $ (199) | $ (136)
Net exchange (losses) gains, tax | 125 | (2) | 191 | 66
Net exchange (losses) gains, after-tax | (15) | (17) | (8) | (70)
Subsidiary Monetary Position Gain (Loss) [Member] |  |  |  |
Foreign Currency Exchange Gain (Loss) [Line Items] |  |  |  |
Net exchange (losses) gains | (54) | 146 | (28) | 179
Net exchange (losses) gains, tax | 94 | (60) | 130 | (47)
Net exchange (losses) gains, after-tax | 40 | 86 | 102 | 132
Hedging Program Gain (Loss) [Member] |  |  |  |
Foreign Currency Exchange Gain (Loss) [Line Items] |  |  |  |
Net exchange (losses) gains | (86) | (161) | (171) | (315)
Net exchange (losses) gains, tax | 31 | 58 | 61 | 113
Net exchange (losses) gains, after-tax | $ (55) | $ (103) | $ (110) | $ (202)

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- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64836518&loc=d3e30700-110894 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64836518&loc=d3e30690-110894 + Details
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