|**Pension and Postretirement Benefit Plans**          | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
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|**Compensation and Retirement Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Pension and Postretirement Benefit Plans              | Pension and Postretirement Benefit PlansThe following table provides the components of net periodic benefit cost:Pension PlansU.S.Qualified(a)U.S.Supplemental(Non-Qualified)(b)International(c)PostretirementPlans(MILLIONS OF DOLLARS)March 31, 2013April 1, 2012March 31, 2013April 1, 2012March 31, 2013April 1, 2012March 31, 2013April 1, 2012Three Months EndedNet periodic benefit cost:Service cost$77$96$7$10$56$53$16$18Interest cost1681831417971014246Expected return on plan assets(253)(245)——(104)(105)(14)(9)Amortization of:Actuarial losses908013113718118Prior service credits(2)(3)(1)(1)(2)(2)(11)(12)Curtailments and settlements––net294422133(10)(7)(11)Special termination benefits—5—10—2—2$109$160$55$60$87$57$37$42(a)The decrease in net periodic benefit costs for thethreemonths endedMarch 31, 2013, compared to thethreemonths endedApril 1, 2012, for our U.S. qualified plans was primarily driven by lower service cost resulting from the decision in 2012 to freeze the defined benefit plans in the U.S. and Puerto Rico, lower settlement activity and greater expected return on plan assets resulting from a higher plan asset base. Also, the decrease in the discount rate resulted in lower interest costs, as well as an increase in the amounts amortized for actuarial losses.(b)The decrease in net periodic benefit costs for thethreemonths endedMarch 31, 2013, compared to thethreemonths endedApril 1, 2012, for our U.S. supplemental (non-qualified) pension plans was primarily driven by special termination benefits in 2012 and lower service cost resulting from the decision in 2012 to freeze the defined benefit plans in the U.S. and Puerto Rico, partially offset by higher settlement activity.(c)The increase in net periodic benefit costs for thethreemonths endedMarch 31, 2013, compared to thethreemonths endedApril 1, 2012, for our international pension plans was primarily driven by an increase in the amounts amortized for actuarial losses resulting from decreases in discount rates and the curtailment gain in our German plans in 2012.For thethreemonths endedMarch 31, 2013, we contributed from our general assets:$92 millionto our U.S. supplemental (non-qualified) pension plans,$67 millionto our international pension plans and$58 millionto our postretirement plans. We did not make a contribution to our U.S. qualified pension plans during the first quarter of 2013.During2013, we expect to contribute from our general assets a total of$161 millionto our U.S. supplemental (non-qualified) pension plans,$345 millionto our international pension plans and$254 millionto our postretirement plans. We do not expect to make contributions to our U.S. qualified pension plans during 2013. Contributions expected to be made for2013are inclusive of amounts contributed during thethreemonths endedMarch 31, 2013. The international pension plan, postretirement plan and U.S. supplemental (non-qualified) pension plan contributions from our general assets include direct employer benefit payments.
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|(MILLIONS OF DOLLARS)                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Three Months Ended                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
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|Actuarial losses                                      |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
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|Curtailments and settlements––net                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
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|(a)                                                   | The decrease in net periodic benefit costs for thethreemonths endedMarch 31, 2013, compared to thethreemonths endedApril 1, 2012, for our U.S. qualified plans was primarily driven by lower service cost resulting from the decision in 2012 to freeze the defined benefit plans in the U.S. and Puerto Rico, lower settlement activity and greater expected return on plan assets resulting from a higher plan asset base. Also, the decrease in the discount rate resulted in lower interest costs, as well as an increase in the amounts amortized for actuarial losses.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
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|(b)                                                   | The decrease in net periodic benefit costs for thethreemonths endedMarch 31, 2013, compared to thethreemonths endedApril 1, 2012, for our U.S. supplemental (non-qualified) pension plans was primarily driven by special termination benefits in 2012 and lower service cost resulting from the decision in 2012 to freeze the defined benefit plans in the U.S. and Puerto Rico, partially offset by higher settlement activity.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
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|(c)                                                   | The increase in net periodic benefit costs for thethreemonths endedMarch 31, 2013, compared to thethreemonths endedApril 1, 2012, for our international pension plans was primarily driven by an increase in the amounts amortized for actuarial losses resulting from decreases in discount rates and the curtailment gain in our German plans in 2012.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

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