Inventories (Tables)

6 Months Ended

Jun. 30, 2015

Inventory, Net [Abstract]

Schedule of Inventory

The following table summarizes our inventory for the periods presented:

Millions of dollars	June 30, 2015			December 31, 2014
Finished products	$	2,516		$	2,189
Raw materials and work in process	724			724
	3,240			2,913
Less: excess of FIFO cost over LIFO cost	(154		)	(173		)
Total inventories	$	3,086		$	2,740