Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2022

Revenue From Contract With Customer [Abstract]

Disaggregation of Revenue

DESC has disaggregated operating revenues by customer class as follows:

	Three Months Ended				Three Months Ended				Six Months Ended				Six Months Ended
	June 30, 2022				June 30, 2021				June 30, 2022				June 30, 2021
(millions)	Electric		Gas		Electric		Gas		Electric		Gas		Electric		Gas
Customer class:
Residential	$	332	$	45	$	271	$	38	$	632	$	154	$	546	$	136
Commercial		245		35		199		26		446		83		374		65
Industrial		135		43		95		18		243		74		183		40
Other		62		6		38		7		100		12		71		12
Revenues from contracts with customers		774		129		603		89		1,421		323		1,174		253
Other revenues		6		—		—		—		14		—		8		1
Total Operating Revenues	$	780	$	129	$	603	$	89	$	1,435	$	323	$	1,182	$	254

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)	June 30, 2022			December 31, 2021
Beginning balance	$	11		$	12
Amortization		(1	)		(1	)
Ending balance	$	10		$	11