CONTINGENCIES, COMMITMENTS, AND GUARANTEES (Tables)

12 Months Ended

Dec. 31, 2022

Commitments and Contingencies Disclosure [Abstract]

Schedule of regulatory assets and liabilities

At December 31, 2022 and 2021, the environmental remediation liability and the balance of under recovered environmental remediation costs were reflected in the balance sheets of Southern Company, Georgia Power, and Southern Company Gas as shown in the table below. Alabama Power did not have environmental remediation liabilities at December 31, 2022 or 2021. Mississippi Power did not have environmental remediation liabilities at December 31, 2022 and had an immaterial balance at December 31, 2021.

	Southern Company		Georgia Power		Southern Company Gas
	(in millions)
December 31, 2022:
Environmental remediation liability:
Other current liabilities	$	65	$	15	$	49
Accrued environmental remediation	207		—		207
Under recovered environmental remediation costs:
Other regulatory assets, current	$	59	$	5	$	54
Other regulatory assets, deferred	235		20		215
December 31, 2021:
Environmental remediation liability:
Other current liabilities	$	69	$	17	$	52
Accrued environmental remediation	197		—		197
Under recovered environmental remediation costs:
Other regulatory assets, current	$	71	$	12	$	59
Other regulatory assets, deferred	231		23		208

Expected future contractual obligations

Southern Company Gas' expected future contractual obligations for pipeline charges, storage capacity, and gas supply that are not recognized on the balance sheets at December 31, 2022 were as follows:

	Pipeline Charges, Storage Capacity, and Gas Supply
	(in millions)
2023	$	637
2024	455
2025	390
2026	212
2027	134
Thereafter	871
Total	$	2,699