Inventories

9 Months Ended

Sep. 30, 2022

Inventory Disclosure [Abstract]

Inventories

Inventories

	September 30, 2022		December 31, 2021
Finished goods	$	493	$	478
Work-in-process	758		631
Purchased raw materials	314		256
Operating supplies	47		37
Total inventories	$	1,612	$	1,402

At September 30, 2022 and December 31, 2021, the portion of inventories valued on a last-in, first-out (“LIFO”) basis was $668 and $523, respectively. These amounts exclude the effects of LIFO valuation reductions, which were $206 and $192 at September 30, 2022 and December 31, 2021, respectively.