Inventories (Tables)

9 Months Ended

Sep. 30, 2019

Inventory, Net [Abstract]

Schedule of Inventory

The following table summarizes our inventory at September 30, 2019 and December 31, 2018:

Millions of dollars	September 30, 2019			December 31, 2018
Finished products	$	2,414		$	2,076
Raw materials and work in process	627			617
	3,041			2,693
Less: excess of FIFO cost over LIFO cost	(158		)	(160		)
Total inventories	$	2,883		$	2,533