Other Financial Information (Tables)

12 Months Ended

Dec. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Financial Information

Other financial information is as follows:
	Year ended December 31
	2020		2019		2018
Total financing interest and debt costs	$	735	$	817	$	921
Less: Capitalized interest	38		19		173
Interest and debt expense	$	697	$	798	$	748
Research and development expenses	$	435	$	500	$	453
Excess of replacement cost over the carrying value of inventories (LIFO method)	$	2,749	$	4,513	$	5,134
LIFO profits (losses) on inventory drawdowns included in earnings	$	(147)	$	(9)	$	26
Foreign currency effects*	$	(645)	$	(304)	$	611

* Includes $(152), $(28) and $416 in 2020, 2019 and 2018, respectively, for the company’s share of equity affiliates’ foreign currency effects.