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Pension Benefits Level 3 Gains and Losses (Details) - Pension [Member] - USD ($)
$ in Millions
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Fair Value, Beginning of Year $ 5,028 $ 5,014
Fair Value, End of Year 4,584 5,028
Level 3 [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Fair Value, Beginning of Year 138 134
Sales (8) (2)
Defined Benefit Plan, Purchases, Sales, and Settlements 138  
Realized gain and unrealized gain (loss) 15 23
Currency Translation (7) (17)
Fair Value, End of Year 276 138
Bonds, corporate    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Fair Value, Beginning of Year 519  
Fair Value, End of Year 419 519
Bonds, corporate | Level 3 [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Fair Value, Beginning of Year 0 1
Sales 0 (1)
Defined Benefit Plan, Purchases, Sales, and Settlements 0  
Realized gain and unrealized gain (loss) 0 0
Currency Translation 0 0
Fair Value, End of Year 0 0
Real estate    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Fair Value, Beginning of Year 130  
Fair Value, End of Year 135 130
Real estate | Level 3 [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Fair Value, Beginning of Year 130 125
Sales (5) (1)
Defined Benefit Plan, Purchases, Sales, and Settlements 0  
Realized gain and unrealized gain (loss) 16 23
Currency Translation (6) (17)
Fair Value, End of Year 135 130
Buy-in Annuity Contract [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Fair Value, End of Year 135  
Buy-in Annuity Contract [Member] | Level 3 [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Fair Value, Beginning of Year 0 0
Sales 0 0
Defined Benefit Plan, Purchases, Sales, and Settlements 135  
Realized gain and unrealized gain (loss) 0 0
Currency Translation 0 0
Fair Value, End of Year 135 0
Other Investments [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Fair Value, Beginning of Year 72  
Fair Value, End of Year 66 72
Other Investments [Member] | Level 3 [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Fair Value, Beginning of Year 8 8
Sales (3) 0
Defined Benefit Plan, Purchases, Sales, and Settlements 3  
Realized gain and unrealized gain (loss) (1) 0
Currency Translation (1) 0
Fair Value, End of Year $ 6 $ 8