|**Accumulated Other Comprehensive Loss (Tables)**                                                                                    | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
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|**Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]**                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Components of Accumulated Other Comprehensive Loss                                                                                   | The components of accumulated other comprehensive loss are summarized below:December 30, 2016 (1)July 1, 2016 (1)(In millions)Foreign currency translation, net of income taxes of $30 million and $29 million at December 30, 2016 and July 1, 2016, respectively$(160)$(131)Net unrealized loss on hedging derivatives, net of income taxes of $11 million at December 30, 2016 and July 1, 2016(19)(18)Unrecognized postretirement obligations, net of income taxes of $213 million at December 30, 2016 and July 1, 2016(344)(346)$(523)$(495)(1)Reclassifications out of accumulated other comprehensive loss to earnings were not material for the two quarters endedDecember 30, 2016orJanuary 1, 2016.
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|                                                                                                                                     | December 30, 2016 (1)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
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|                                                                                                                                     | (In millions)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Foreign currency translation, net of income taxes of $30 million and $29 million at December 30, 2016 and July 1, 2016, respectively | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Net unrealized loss on hedging derivatives, net of income taxes of $11 million at December 30, 2016 and July 1, 2016                 | (19                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Unrecognized postretirement obligations, net of income taxes of $213 million at December 30, 2016 and July 1, 2016                   | (344                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
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|(1)                                                                                                                                  | Reclassifications out of accumulated other comprehensive loss to earnings were not material for the two quarters endedDecember 30, 2016orJanuary 1, 2016.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     

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+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580
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