Inventories (Tables)

3 Months Ended

Mar. 31, 2012

Inventories [Abstract]

Inventories

	March 31,		December 31,
Millions of dollars	2012		2011
Finished products and parts	$	2,050	$	1,801
Raw materials and supplies		764		673
Work in process		102		96
Total	$	2,916	$	2,570