Inventories (Tables)

9 Months Ended

Sep. 30, 2025

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventories consisted of:

($ in millions)	September 30, 2025		December 31, 2024
Finished goods	$	798	$	764
Raw materials	14		25
Work in process	835		675
Supplies	84		79
Total (approximates current cost)	$	1,731	$	1,543
Increase (Decrease) to last in, first out (“LIFO”) costs	4		(7)
	$	1,735	$	1,536
Recognized as:
Inventories	$	1,488	$	1,321
Other assets	247		215
Inventories valued under the LIFO method	127		133

Schedule of Inventory, Noncurrent

Inventories consisted of:

($ in millions)	September 30, 2025		December 31, 2024
Finished goods	$	798	$	764
Raw materials	14		25
Work in process	835		675
Supplies	84		79
Total (approximates current cost)	$	1,731	$	1,543
Increase (Decrease) to last in, first out (“LIFO”) costs	4		(7)
	$	1,735	$	1,536
Recognized as:
Inventories	$	1,488	$	1,321
Other assets	247		215
Inventories valued under the LIFO method	127		133