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 June 30, 2019
	Wholesale										Consolidation
	West		Texas		East			Retail			Elimination			Total
Total operating revenues⁽¹⁾	$	649	$	899	$	646		$	1,082		$	(677	)	$	2,599

Commodity Margin	$	251	$	173	$	235		$	93		$	—		$	752
Add: Mark-to-market commodity activity, net and other⁽²⁾	58		240		94			(182		)	(10		)	200
Less:
Operating and maintenance expense	84		66		72			33			(10		)	245
Depreciation and amortization expense	60		54		48			13			—			175
General and other administrative expense	5		15		10			4			—			34
Other operating expenses	7		1		11			—			—			19
Impairment losses	—		—		40			—			—			40
(Income) from unconsolidated subsidiaries	—		—		(6		)	1			—			(5		)
Income (loss) from operations	153		277		154			(140		)	—			444
Interest expense														157
Gain on extinguishment of debt and other (income) expense, net														8
Income before income taxes														$	279



	Three Months Ended June 30, 2018
	Wholesale											Consolidation
	West			Texas		East			Retail			Elimination			Total
Total operating revenues⁽¹⁾	$	355		$	993	$	341		$	935		$	(365	)	$	2,259

Commodity Margin	$	241		$	151	$	225		$	77		$	—		$	694
Add: Mark-to-market commodity activity, net and other⁽²⁾	(23		)	301		(7		)	(67		)	(8		)	196
Less:
Operating and maintenance expense	80			65		65			41			(9		)	242
Depreciation and amortization expense	67			57		49			13			—			186
General and other administrative expense	5			13		8			5			—			31
Other operating expenses	8			3		8			—			—			19
(Income) from unconsolidated subsidiaries	—			—		(6		)	1			—			(5		)
Income (loss) from operations	58			314		94			(50		)	1			417
Interest expense															157
Other (income) expense, net															62
Income before income taxes															$	198



	Six Months Ended June 30, 2019
	Wholesale										Consolidation
	West		Texas		East			Retail			Elimination			Total
Total operating revenues⁽³⁾	$	1,331	$	1,642	$	1,335		$	2,080		$	(1,190	)	$	5,198

Commodity Margin	$	515	$	335	$	500		$	181		$	—		$	1,531
Add: Mark-to-market commodity activity, net and other⁽⁴⁾	114		284		107			(235		)	(18		)	252
Less:
Operating and maintenance expense	165		131		139			67			(18		)	484
Depreciation and amortization expense	133		99		91			26			—			349
General and other administrative expense	12		27		19			8			—			66
Other operating expenses	16		3		19			—			—			38
Impairment losses	—		—		55			—			—			55
(Income) from unconsolidated subsidiaries	—		—		(12		)	1			—			(11		)
Income (loss) from operations	303		359		296			(156		)	—			802
Interest expense														306
Gain on extinguishment of debt and other (income) expense, net														27
Income before income taxes														$	469



	Six Months Ended June 30, 2018
	Wholesale											Consolidation
	West			Texas			East			Retail		Elimination			Total
Total operating revenues⁽³⁾	$	835		$	1,133		$	955		$	1,873	$	(528	)	$	4,268

Commodity Margin	$	426		$	317		$	409		$	154	$	—		$	1,306
Add: Mark-to-market commodity activity, net and other⁽⁴⁾	(10		)	(246		)	33			61		(15		)	(177		)
Less:
Operating and maintenance expense	170			145			136			81		(15		)	517
Depreciation and amortization expense	134			133			94			26		—			387
General and other administrative expense	21			38			23			9		—			91
Other operating expenses	22			19			15			—		—			56
(Income) from unconsolidated subsidiaries	—			—			(12		)	1		—			(11		)
Income (loss) from operations	69			(264		)	186			98		—			89
Interest expense															308
Other (income) expense, net															69
Loss before income taxes															$	(288	)

_________


(1)	Includes intersegment revenues of $100 million and $70 million in the West, $348 million and $276 million in Texas, $228 million and $18 million in the East and $1 million and $1 million in Retail for the three months ended June 30, 2019 and 2018, respectively.


(2)	Includes $(19) million and $(19) million of lease levelization and $18 million and $25 million of amortization expense for the three months ended June 30, 2019 and 2018, respectively.


(3)	Includes intersegment revenues of $262 million and $184 million in the West, $559 million and $209 million in Texas, $365 million and $133 million in the East and $4 million and $2 million in Retail for the six months ended June 30, 2019 and 2018, respectively.


(4)	Includes $(35) million and $(35) million of lease levelization and $39 million and $53 million of amortization expense for the six months ended June 30, 2019 and 2018, respectively.