Inventories (Tables)

3 Months Ended

Dec. 31, 2022

Inventory Disclosure [Abstract]

Schedule of Components of Inventories

Inventories comprise the following: 

	December 31, 2022		September 30, 2022		December 31, 2021
Non-utility LPG and natural gas	$	310	$	335	$	352
Gas Utility natural gas	129		166		65
Energy certificates	78		70		60
Materials, supplies and other	101		94		71
Total inventories	$	618	$	665	$	548