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Inventories
 12 Months Ended
Jan. 01, 2017
Inventory Disclosure [Abstract]  
Inventories
Inventories
At the end of 2016 and 2015, inventories were comprised of:
(Dollars in Millions)
 
2016
 
2015
Raw materials and supplies
 
$
952

 
936

Goods in process
 
2,185

 
2,241

Finished goods
 
5,007

 
4,876

Total inventories
 
$
8,144

 
8,053