XML 155 R119.htm IDEA: XBRL DOCUMENT v3.8.0.1
Details of Income Statement Items (Sales) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Notes to Consolidated Financial Statements [Abstract]      
Sales $ 5,418 $ 5,363 $ 5,405
Cost of sales [Abstract]      
Materials 1,504 1,546 1,576
Energy 343 315 305
Cost of labor 777 753 694
Other 1,122 1,089 1,027
Cost of sales $ 3,746 $ 3,703 $ 3,602