AFFILIATED TRANSACTIONS SCANA Services (Tables)

9 Months Ended

Sep. 30, 2017

SCEG

Related Party Transaction [Line Items]

Schedule of Related Party Transactions [Table Text Block]

	Three Months Ended September 30,				Nine Months Ended September 30,
Millions of Dollars	2017		2016		2017		2016
Purchases from SCANA Energy	$	35.3	$	34.8	$	93.4	$	83.1
Direct and Allocated Costs from SCANA Services	78.1		80.4		233.6		236.4

Millions of Dollars	September 30, 2017		December 31, 2016
Payable to SCANA Energy	$	10.7	$	8.8
Payable to SCANA Services	45.3		63.5