Segment Information (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Schedule of Financial Data for Segments

The tables below show financial data for our segments (including a reconciliation of our Commodity Margin to income (loss) from operations by segment) for the periods indicated (in millions):



	Three Months Ended March 31, 2019
	Wholesale																Consolidation
	West				Texas				East				Retail				Elimination				Total
Total operating revenues⁽¹⁾	$	682			$	743			$	689			$	998			$	(513	)		$	2,599

Commodity Margin	$	264			$	162			$	265			$	88			$	—			$	779
Add: Mark-to-market commodity activity, net and other⁽²⁾	56				44				13				(53		)		(8		)		52
Less:
Operating and maintenance expense	81				65				67				34				(8		)		239
Depreciation and amortization expense	73				45				43				13				—				174
General and other administrative expense	7				12				9				4				—				32
Other operating expenses	9				2				23				—				—				34
(Income) from unconsolidated subsidiaries	—				—				(6		)		—				—				(6		)
Income (loss) from operations	150				82				142				(16		)		—				358
Interest expense																					149
Gain on extinguishment of debt and other (income) expense, net																					19
Income before income taxes																					$	190



	Three Months Ended March 31, 2018
	Wholesale																Consolidation
	West				Texas				East				Retail				Elimination				Total
Total operating revenues⁽¹⁾	$	480			$	140			$	614			$	938			$	(163	)		$	2,009

Commodity Margin	$	185			$	166			$	184			$	77			$	—			$	612
Add: Mark-to-market commodity activity, net and other⁽²⁾	13				(547		)		40				128				(7		)		(373		)
Less:
Operating and maintenance expense	90				80				71				40				(6		)		275
Depreciation and amortization expense	67				76				45				13				—				201
General and other administrative expense	16				25				15				4				—				60
Other operating expenses	14				16				7				—				—				37
(Income) from unconsolidated subsidiaries	—				—				(6		)		—				—				(6		)
Income (loss) from operations	11				(578		)		92				148				(1		)		(328		)
Interest expense																					151
Other (income) expense, net																					7
Loss before income taxes																					$	(486	)

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(1)	Includes intersegment revenues of $162 million and $114 million in the West, $211 million and $(67) million in Texas, $137 million and $115 million in the East and $3 million and $1 million in Retail for the three months ended March 31, 2019 and 2018, respectively.


(2)	Includes $(16) million and $(16) million of lease levelization and $21 million and $28 million of amortization expense for the three months ended March 31, 2019 and 2018, respectively.