Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2023

Revenue From Contract With Customer [Abstract]

Disaggregation of Revenue

DESC has disaggregated operating revenues by customer class as follows:

Three Months Ended March 31,	2023				2022
(millions)	Electric		Gas		Electric		Gas
Customer class:
Residential	$	262	$	109	$	300	$	109
Commercial		187		42		201		48
Industrial		91		22		108		31
Other		36		4		38		6
Revenues from contracts with customers		576		177		647		194
Other revenues		6		—		8		—
Total Operating Revenues	$	582	$	177	$	655	$	194

Balance and Activity Related to Contract Costs Deferred as Regulatory Assets

Balances and activity related to contract costs deferred as regulatory assets were as follows:

	Regulatory Assets
(millions)	March 31, 2023		December 31, 2022
Beginning balance	$	9	$	11
Amortization		—		(2	)
Ending balance	$	9	$	9