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Stockholders' Equity Stockholders' Equity (Reclassifications out of accumulated other Comprehensive Income / (Loss)) (Details) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Cost of goods sold |  | $ 4,192 | $ 3,990 | $ 8,563 | $ 8,232
Income Tax Expense (Benefit) |  | 128 | 306 | 352 | 712
Other (Loss) Income, Net |  | (21) | 51 | 285 | 423
Income from continuing operations after income taxes |  | 859 | 1,027 | 2,197 | 2,256
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, Net of Tax |  |  |  | 237 | 284
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member] |  |  |  |  |
Income Tax Expense (Benefit) | [1] | 5 | (3) | 8 | (7)
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, Net of Tax |  | 115 | 169 | 237 | 284
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member] |  |  |  |  |
Cost of goods sold | [2] | (13) | 7 | (21) | 18
Income from continuing operations after income taxes |  | (8) | 4 | (13) | 11
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] |  |  |  |  |
Income Tax Expense (Benefit) | [1] | 0 | 0 | 0 | 0
Other (Loss) Income, Net | [3] | 0 | 12 | (1) | 13
Income from continuing operations after income taxes |  | 0 | 12 | (1) | 13
Pension Plan [Member] | Prior service benefit |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [4] | (1) | (1) | (2) | (3)
Pension Plan [Member] | Actuarial losses |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [4] | 189 | 204 | 379 | 376
Pension Plan [Member] | Curtailment loss (gain) |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [4] | 0 | 17 | 0 | 66
Pension Plan [Member] | Settlement loss |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [4] | 0 | 37 | 0 | 38
Pension Plan [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax |  | 188 | 257 | 377 | 477
Reclassification from AOCI, Current Period, Tax | [1] | (68) | (91) | (133) | (168)
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, Net of Tax |  | 120 | 166 | 244 | 309
Other Post Employment Benefit Plans [Member] | Prior service benefit |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [4] | (18) | (36) | (35) | (75)
Other Post Employment Benefit Plans [Member] | Actuarial losses |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [4] | 23 | 18 | 46 | 35
Other Post Employment Benefit Plans [Member] | Curtailment loss (gain) |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [4] | 0 | (3) | 0 | (33)
Other Post Employment Benefit Plans [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax |  | 5 | (21) | 11 | (73)
Reclassification from AOCI, Current Period, Tax | [1] | (2) | 8 | (4) | 24
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, Net of Tax |  | $ 3 | $ (13) | $ 7 | $ (49)
[1] | Provision for income taxes from continuing operations.
[2] | Cost of goods sold.
[3] | Other (loss) income, net.
[4] | These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost of the company's pension and other benefit plans. See Note 14 for additional information.

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