Inventories (Tables)

9 Months Ended

Sep. 30, 2012

Inventory Disclosure [Abstract]

Inventories

The cost of the remaining inventory was recorded on the average cost method. Inventories consisted of the following:

Millions of dollars	September 30, 2012		December 31, 2011
Finished products and parts	$	2,564	$	1,801
Raw materials and supplies	831		673
Work in process	144		96
Total	$	3,539	$	2,570