Inventories (Tables)

3 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Summary of inventories

Inventories are stated at the lower of cost (using FIFO or average methods) or market (determined on the basis of estimated realizable values) and are summarized as follows (in millions):

	December 31, 2018		September 30, 2018
Finished goods	$	180	$	170
Work in process	44		41
Raw materials, parts and supplies	298		266
Total	$	522	$	477