Revenue Recognition

9 Months Ended

Sep. 30, 2021

Revenue From Contract With Customer [Abstract]

Revenue Recognition

3. REVENUE RECOGNITION

DESC has disaggregated operating revenues by customer class as follows:

	Three Months Ended				Three Months Ended				Nine Months Ended				Nine Months Ended
	September 30, 2021				September 30, 2020				September 30, 2021				September 30, 2020
(millions)	Electric		Gas		Electric		Gas		Electric		Gas		Electric		Gas
Customer class:
Residential	$	366	$	34	$	349	$	27	$	912	$	170	$	862	$	139
Commercial		244		26		216		18		618		91		568		71
Industrial		112		27		90		15		295		67		253		44
Other		46		4		33		4		117		16		90		12
Revenues from contracts with    customers		768		91		688		64		1,942		344		1,773		266
Other revenues		4		—		3		—		12		1		12		—
Total Operating Revenues	$	772	$	91	$	691	$	64	$	1,954	$	345	$	1,785	$	266

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 $9 million and $5 million at September 30, 2021 and December 31, 2020, respectively. During the nine months ended September 30, 2021 and 2020, DESC recognized revenue of $4 million and $6 million, respectively, 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.