Regulatory Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2022

Regulated Operations [Abstract]

Regulatory Assets and Liabilities

The Company has recorded regulatory assets and liabilities (in millions) that it expects to pass through to its customers in accordance with, and subject to, regulatory provisions as follows:

December 31,	2022		2021		Recovery/Refund Period
Regulatory assets
Current regulatory assets:
AES Indiana deferred fuel and purchased power costs	$	80	$	9	1 year
El Salvador energy pass through costs recovery	78		80		Quarterly
Other	79		79		1 year
Total current regulatory assets	237		168
Noncurrent regulatory assets:
AES Indiana Petersburg Units 1 and 2 retirement costs	287		300		Over life of assets
AES Indiana and AES Ohio defined benefit pension obligations (1)	194		191		Various
AES Indiana environmental costs	73		76		Various
AES Indiana deferred Midwest ISO costs	34		48		4 years
AES Indiana deferred fuel and purchased power costs	21		84		2 years
Other	115		135		Various
Total noncurrent regulatory assets	724		834
Total regulatory assets	$	961	$	1,002
Regulatory liabilities
Current regulatory liabilities:
Overcollection of costs to be passed back to customers	$	46	$	18	1 year
Other	18		1		Various
Total current regulatory liabilities	64		19
Noncurrent regulatory liabilities:
AES Indiana and AES Ohio accrued costs of removal and AROs	657		868		Over life of assets
AES Indiana and AES Ohio income taxes payable to customers through rates	134		158		Various
Other	22		30		Various
Total noncurrent regulatory liabilities	813		1,056
Total regulatory liabilities	$	877	$	1,075

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(1)Past expenditures on which the Company earns a rate of return.