Operating Revenue

6 Months Ended

Jun. 30, 2025

Revenues [Abstract]

Operating Revenue

3. OPERATING REVENUE

DESC’s revenue consists of the following:

	Three Months Ended June 30, 2025				Three Months Ended June 30, 2024				Six Months Ended June 30, 2025				Six Months Ended June 30, 2024
(millions)	Electric		Gas		Electric		Gas		Electric		Gas		Electric		Gas
Customer class:
Residential	$	346	$	55	$	294	$	48	$	717	$	206	$	577	$	165
Commercial		235		26		208		25		463		80		396		66
Industrial		112		3		94		17		221		30		181		35
Other		35		12		31		6		67		20		59		12
Revenues from contracts with    customers		728		96		627		96		1,468		336		1,213		278
Other revenues		7		1		7		1		13		1		14		1
Total Operating Revenues	$	735	$	97	$	634	$	97	$	1,481	$	337	$	1,227	$	279

Contract liabilities represent the obligation to transfer goods or services to a customer for which consideration has already been received from the customer. DESC had contract liability balances of $6 million at both June 30, 2025 and December 31, 2024. During both of the six months ended June 30, 2025 and 2024, DESC recognized revenue of $4 million from the beginning contract liability balances as DESC fulfilled its obligations to provide service to its customers. Contract liabilities are recorded in customer deposits and customer prepayments in the Consolidated Balance Sheets.

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

	Regulatory Assets
(millions)	June 30, 2025		December 31, 2024
Beginning balance	$	10	$	11
Additional costs		4		—
Amortization		—		(1	)
Ending balance	$	14	$	10