Long-Term and Short-Term Debt and Liquidity (Tables)

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Schedule of Line of Credit Facilities

DESC's share of commercial paper and letters of credit outstanding under its joint credit facility with Dominion Energy, were as follows:

(millions)	Facility Limit		Outstanding Commercial Paper		Outstanding Letters of Credit
At June 30, 2019	$	1,000	$	—	$	—

(millions)	Facility Limit(1)		Outstanding Commercial Paper		Outstanding Letters of Credit
At December 31, 2018	$	1,200	$	73	$	—

(1) Included $500 million related to Fuel Company. In February 2019, Fuel Company's commercial paper program and its credit facility were terminated.