Inventories (Tables)

6 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Components of Inventories

Inventories comprise the following: 

	March 31, 2021		September 30, 2020		March 31, 2020
Non-utility LPG and natural gas	$	179	$	164	$	110
Gas Utility natural gas	3		20		3
Materials, supplies and other	86		57		67
Total inventories	$	268	$	241	$	180