INVENTORIES

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

INVENTORIES

INVENTORIES

The following table provides a breakdown of inventories:

Inventories	Mar 31, 2018			Dec 31, 2017
In millions
Finished goods	$	5,682		$	5,213
Work in process	2,377			1,747
Raw materials	941			898
Supplies	895			848
Total	$	9,895		$	8,706
Adjustment of inventories to a LIFO basis	(318		)	(330		)
Total inventories 1	$	9,577		$	8,376

1. In the first quarter of 2018, the Company adopted Topic 606, which resulted in a cumulative effect change to the Company's January 1, 2018 "Inventories" balance. See Note 1 for additional information.

Total inventories increased $1,201 million from December 31, 2017, primarily due to the build-up of inventories in preparation of planned maintenance turnaround activity and an increase in inventories purchased from Sadara Chemical Company ("Sadara") under a marketing agreement.