Inventories (Tables)

6 Months Ended

Jun. 30, 2015

Inventory Disclosure [Abstract]

Inventories

Inventories include:

($ in millions)	June 30, 2015		December 31, 2014
Finished products	$	1,202	$	1,169
Work in process	160		157
Raw materials	445		439
Supplies	54		60
Total	$	1,861	$	1,825