|**Divestiture and Equity-Method Investment (Tables)**                              | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
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|**Business Combinations, Discontinued Operations, And Disposal Groups [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Schedule of Discontinued Operations-Net of Tax                                     | The following table provides the components ofDiscontinued operations—net of tax:Three Months Ended(MILLIONS OF DOLLARS)March 30, 2014March 31, 2013Revenues$—$1,089Pre-tax income from discontinued operations5200Provision for taxes on income(a)—51Income from discontinued operations––net of tax5149Pre-tax gain on disposal of discontinued operations64—Benefit for taxes on income(4)—Gain on disposal of discontinued operations––net of tax(b)68—Discontinued operations––net of tax$73$149(a)Includes a deferred tax expense of$7 millionfor the three months ended March 31, 2013.(b)For the three months endedMarch 30, 2014, represents post-close adjustments.
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|The following table provides the components ofDiscontinued operations—net of tax: 
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|(MILLIONS OF DOLLARS)                                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Revenues                                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Pre-tax income from discontinued operations                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Provision for taxes on income(a)                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Income from discontinued operations––net of tax                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Pre-tax gain on disposal of discontinued operations                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Benefit for taxes on income                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Gain on disposal of discontinued operations––net of tax(b)                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Discontinued operations––net of tax                                                |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
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|(a)                                                                                | Includes a deferred tax expense of$7 millionfor the three months ended March 31, 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
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|(b)                                                                                | For the three months endedMarch 30, 2014, represents post-close adjustments.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

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