Regulatory Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2023

Regulatory Assets and Liabilities Disclosure [Abstract]

Regulatory assets

	March 31,		December 31,
(in millions)	2023		2022
Current:
Regulatory balancing and memorandum accounts	$	2,743	$	2,400
Power contracts		49		71
Other		25		26
Total current		2,817		2,497
Long-term:
Deferred income taxes, net of liabilities		5,282		5,178
Unamortized investments, net of accumulated amortization		111		113
Unamortized loss on reacquired debt		106		109
Regulatory balancing and memorandum accounts		1,468		1,589
Environmental remediation		238		241
Recovery assets		827		834
Other		119		117
Total long-term		8,151		8,181
Total regulatory assets	$	10,968	$	10,678

Regulatory liabilities

	March 31,		December 31,
(in millions)	2023		2022
Current:
Regulatory balancing and memorandum accounts	$	302	$	584
Energy derivatives		74		338
Other		49		42
Total current		425		964
Long-term:
Costs of removal		2,608		2,589
Re-measurement of deferred taxes		2,237		2,250
Recoveries in excess of ARO liabilities		1,378		1,231
Regulatory balancing and memorandum accounts		1,317		1,116
Pension and other postretirement benefits		999		1,007
Other		16		18
Total long-term		8,555		8,211
Total regulatory liabilities	$	8,980	$	9,175

Schedule of Regulatory Balancing Accounts

	March 31,		December 31,
(in millions)	2023		2022
Asset (liability)
Energy resource recovery account	$	3	$	1,580
Portfolio allocation balancing account		1,381		(73)
New system generation balancing account		46		(63)
Public purpose programs and energy efficiency programs		(1,785)		(1,577)
Base revenue requirement balancing account		1,134		1,108
GRC wildfire mitigation balancing accounts		125		67
Residential uncollectibles balancing account		14		—
Greenhouse gas auction revenue and low carbon fuel standard revenue		(55)		(289)
FERC balancing accounts		(135)		(123)
Wildfire and drought restoration accounts		362		352
Wildfire-related memorandum accounts		1,206		1,168
COVID-19-related memorandum accounts		69		67
Customer service re-platform memorandum account		43		64
Tax accounting memorandum account and pole loading balancing account		153		90
Excess bond and power charge balancing account		(21)		(56)
Other		52		(26)
Asset	$	2,592	$	2,289