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Stockholders' Equity (Schedule of Components of Other Comprehensive Income / (Loss)) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Cumulative translation adjustment, pre-tax | $ 25 |  | $ 77 |  | $ (457) |
Cumulative translation adjustment, tax | 0 |  | 0 |  | 0 |
Cumulative translation adjustment, after-tax | 25 |  | 77 |  | (457) |
Additions and revaluations of derivatives designated as cash flow hedges, pre-tax | (58) | [1] | 8 | [1] | 10 | [1]
Additions and revaluations of derivatives designated as cash flow hedges, tax | 22 |  | (6) |  | (5) |
Additions and revaluations of derivatives designated as cash flow hedges, after-tax | (36) |  | 2 |  | 5 |
Clearance of hedge results to earnings, pre-tax | (25) |  | (65) |  | 96 |
Net revaluation and clearance of cash flow hedges to earnings, pre-tax | (83) |  | (57) |  | 106 |
Net revaluation and clearance of cash flow hedges to earnings, tax | 32 |  | 22 |  | (41) |
Net revaluation and clearance of cash flow hedges to earnings, after-tax | (51) |  | (35) |  | 65 |
Net unrealized (loss) gain on securities, pre-tax | 1 |  | (2) |  | 2 |
Net unrealized (loss) gain on securities, tax | (1) |  | 1 |  | (1) |
Net unrealized (loss) gain on securities, after-tax | 0 |  | (1) |  | 1 |
Other comprehensive income (loss), before tax | 4,868 |  | 253 |  | (4,300) |
Other comprehensive income (loss), tax | (1,665) |  | (121) |  | 1,322 |
Other comprehensive income (loss), after-tax | 3,203 |  | 132 |  | (2,978) |
Pension Plans, Defined Benefit [Member] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Net gain (loss), pre-tax | 3,293 | [1] | (1,433) | [1] | (4,069) | [1]
Net gain (loss), tax | (1,136) |  | 437 |  | 1,402 |
Net gain (loss), after-tax | 2,157 |  | (996) |  | (2,667) |
Prior service benefit (cost), pre-tax | 62 | [1] | 22 | [1] | (2) | [1]
Prior service benefit (cost), tax | (22) |  | (8) |  | 0 |
Prior service benefit (cost), after-tax | 40 |  | 14 |  | (2) |
Amortization of prior service cost (benefit), pre-tax | 8 | [2] | 13 | [2] | 16 | [2]
Amortization of prior service cost (benefit), tax | (2) |  | (4) |  | (5) |
Amortization of prior service cost (benefit), after-tax | 6 |  | 9 |  | 11 |
Amortization of loss, pre-tax | 957 | [2] | 887 | [2] | 613 | [2]
Amortization of loss, tax | (331) |  | (305) |  | (210) |
Amortization of loss, after-tax | 626 |  | 582 |  | 403 |
Curtailment (gain) loss, pre-tax | 1 | [2] | 2 | [2] | 0 | [2]
Curtailment (gain) loss, tax | 0 |  | 0 |  | 0 |
Curtailment (gain) loss, after-tax | 1 |  | 2 |  | 0 |
Settlement loss, pre-tax | 152 | [2] | 5 | [2] | 0 | [2]
Settlement loss, tax | (45) |  | (2) |  | 0 |
Settlement loss, after-tax | 107 |  | 3 |  | 0 |
Benefit plans, net, pre-tax | 4,473 |  | (504) |  | (3,442) |
Benefit plans, net, tax | (1,536) |  | 118 |  | 1,187 |
Benefit plans, net, after-tax | 2,937 |  | (386) |  | (2,255) |
Other Long-Term Employee Benefit Plans [Member] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Net gain (loss), pre-tax | 513 | [1] | (60) | [1] | (437) | [1]
Net gain (loss), tax | (184) |  | 17 |  | 151 |
Net gain (loss), after-tax | 329 |  | (43) |  | (286) |
Prior service benefit (cost), pre-tax | 211 | [1] | 857 | [1] | (11) | [1]
Prior service benefit (cost), tax | (72) |  | (299) |  | 4 |
Prior service benefit (cost), after-tax | 139 |  | 558 |  | (7) |
Amortization of prior service cost (benefit), pre-tax | (195) | [2] | (155) | [2] | (121) | [2]
Amortization of prior service cost (benefit), tax | 69 |  | 54 |  | 43 |
Amortization of prior service cost (benefit), after-tax | (126) |  | (101) |  | (78) |
Amortization of loss, pre-tax | 76 | [2] | 94 | [2] | 60 | [2]
Amortization of loss, tax | (27) |  | (33) |  | (21) |
Amortization of loss, after-tax | 49 |  | 61 |  | 39 |
Curtailment (gain) loss, pre-tax | (154) | [2] | 3 | [2] | 0 | [2]
Curtailment (gain) loss, tax | 54 |  | (1) |  | 0 |
Curtailment (gain) loss, after-tax | (100) |  | 2 |  | 0 |
Settlement loss, pre-tax | 1 | [2] | 0 | [2] | 0 | [2]
Settlement loss, tax | 0 |  | 0 |  | 0 |
Settlement loss, after-tax | 1 |  | 0 |  | 0 |
Benefit plans, net, pre-tax | 452 |  | 739 |  | (509) |
Benefit plans, net, tax | (160) |  | (262) |  | 177 |
Benefit plans, net, after-tax | 292 |  | 477 |  | (332) |
Foreign Currency Contract [Member] | Net sales [Member] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Clearance of hedge results to earnings, pre-tax | (1) |  | (21) |  | 15 |
Clearance of hedge results to earnings, tax | 0 |  | 8 |  | (5) |
Clearance of hedge results to earnings, after-tax | (1) |  | (13) |  | 10 |
Commodity Contract [Member] | Cost of goods sold [Member] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Clearance of hedge results to earnings, pre-tax | (24) |  | (44) |  | 81 |
Clearance of hedge results to earnings, tax | 10 |  | 20 |  | (31) |
Clearance of hedge results to earnings, after-tax | $ (14) |  | $ (24) |  | $ 50 |
[1] | These amounts represent changes in accumulated other comprehensive income excluding changes due to reclassifying amounts to the Consolidated Income Statements.
[2] | These accumulated other comprehensive income components are included in the computation of net periodic benefit cost of the company's pension and other long-term employee benefit plans. See Note 18 for additional information.

X
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