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Stock Options and Other Share-Based Compensation (Details)
$ in Millions
3 Months Ended 6 Months Ended
Dec. 29, 2017
USD ($)
plan
shares
Dec. 30, 2016
USD ($)
shares
Dec. 29, 2017
USD ($)
plan
shares
Dec. 30, 2016
USD ($)
shares
Continuing Operations        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation costs related to share-based awards | $ $ 13 $ 11 $ 24 $ 21
SIPs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shareholder approved employee stock incentive plans | plan 2   2  
Common stock issued, net of shares withheld for tax purposes (in shares) 67,717 191,740 398,932 733,953
2015 EIP        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected dividend yield     1.82%  
Expected volatility     19.32%  
Risk free interest rates     1.77%  
Expected term (years)     5 years  
2015 EIP | Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock options granted (in shares) 698   412,285  
2015 EIP | Restricted Shares and Restricted Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted shares and units granted (in shares) 1,140   130,065  
2015 EIP | Performance Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted shares and units granted (in shares) 228   173,635