| **Accumulated Other Comprehensive Loss, Excluding Noncontrolling Interests** | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
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| **Equity [Abstract]**                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Accumulated Other Comprehensive Loss, Excluding Noncontrolling Interests     | Accumulated Other Comprehensive Loss, Excluding Noncontrolling InterestsThe following table provides the changes, net of tax, in Accumulated other comprehensive loss:  Net Unrealized Gains/(Losses) Benefit Plans  (MILLIONS OF DOLLARS) Foreign Currency Translation Adjustments  Derivative Financial Instruments Available-For-Sale Securities Actuarial Gains/(Losses) Prior Service (Costs)/Credits and Other Accumulated Other Comprehensive LossBalance, December 31, 2014 $(2,689) $517 $(222) $(5,654) $733 $(7,316)Other comprehensive income/(loss)(a) (1,378) (41) (49) 256 (29) (1,241)Balance, March 29, 2015 $(4,067) $476 $(271) $(5,398) $703 $(8,557)(a) Amounts do not include foreign currency translation adjustments attributable to noncontrolling interests of $16 million loss for the first three months of 2015.As of March 29, 2015, with respect to derivative financial instruments, the amount of unrealized pre-tax gains estimated to be reclassified into income within the next 12 months is $435 million (which is expected to be offset primarily by losses resulting from reclassification adjustments related to available-for-sale securities). |

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| - Definition
The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.
+ References
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