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 September 30, 2019
	Wholesale										Consolidation
	West		Texas			East			Retail		Elimination			Total
Total operating revenues⁽¹⁾	$	856	$	867		$	348		$	1,096	$	(375	)	$	2,792

Commodity Margin	$	393	$	369		$	265		$	100	$	—		$	1,127
Add: Mark-to-market commodity activity, net and other⁽²⁾	110		(107		)	(69		)	108		(8		)	34
Less:
Operating and maintenance expense	82		71			69			41		(8		)	255
Depreciation and amortization expense	61		47			51			14		—			173
General and other administrative expense	10		13			12			4		—			39
Other operating expenses	9		2			4			—		—			15
(Income) from unconsolidated subsidiaries	—		—			(3		)	—		—			(3		)
Income from operations	341		129			63			149		—			682
Interest expense														153
Loss on extinguishment of debt and other (income) expense, net														17
Income before income taxes														$	512



	Three Months Ended September 30, 2018
	Wholesale											Consolidation
	West			Texas		East			Retail			Elimination			Total
Total operating revenues⁽¹⁾	$	701		$	1,022	$	460		$	1,125		$	(418	)	$	2,890

Commodity Margin	$	356		$	187	$	320		$	111		$	—		$	974
Add: Mark-to-market commodity activity, net and other⁽²⁾	(13		)	137		(26		)	(20		)	(8		)	70
Less:
Operating and maintenance expense	85			63		72			36			(8		)	248
Depreciation and amortization expense	70			57		39			13			—			179
General and other administrative expense	7			12		7			5			—			31
Other operating expenses	11			3		9			—			—			23
(Income) from unconsolidated subsidiaries	—			—		(5		)	—			—			(5		)
Income from operations	170			189		172			37			—			568
Interest expense															158
Loss on extinguishment of debt and other (income) expense, net															4
Income before income taxes															$	406



	Nine Months Ended September 30, 2019
	Wholesale										Consolidation
	West		Texas		East			Retail			Elimination			Total
Total operating revenues⁽³⁾	$	2,187	$	2,509	$	1,683		$	3,176		$	(1,565	)	$	7,990

Commodity Margin	$	908	$	704	$	765		$	281		$	—		$	2,658
Add: Mark-to-market commodity activity, net and other⁽⁴⁾	224		177		38			(127		)	(26		)	286
Less:
Operating and maintenance expense	247		202		208			108			(26		)	739
Depreciation and amortization expense	194		146		142			40			—			522
General and other administrative expense	22		40		31			12			—			105
Other operating expenses	25		5		23			—			—			53
Impairment losses	—		—		55			—			—			55
(Income) from unconsolidated subsidiaries	—		—		(15		)	1			—			(14		)
Income (loss) from operations	644		488		359			(7		)	—			1,484
Interest expense														459
Loss on extinguishment of debt and other (income) expense, net														44
Income before income taxes														$	981



	Nine Months Ended September 30, 2018
	Wholesale											Consolidation
	West			Texas			East			Retail		Elimination			Total
Total operating revenues⁽³⁾	$	1,536		$	2,155		$	1,415		$	2,998	$	(946	)	$	7,158

Commodity Margin	$	782		$	504		$	729		$	265	$	—		$	2,280
Add: Mark-to-market commodity activity, net and other⁽⁴⁾	(23		)	(109		)	7			41		(23		)	(107		)
Less:
Operating and maintenance expense	255			208			208			117		(23		)	765
Depreciation and amortization expense	204			190			133			39		—			566
General and other administrative expense	28			50			30			14		—			122
Other operating expenses	33			22			24			—		—			79
(Income) from unconsolidated subsidiaries	—			—			(17		)	1		—			(16		)
Income (loss) from operations	239			(75		)	358			135		—			657
Interest expense															466
Loss on extinguishment of debt and other (income) expense, net															73
Income before income taxes															$	118

_________


(1)	Includes intersegment revenues of $133 million and $160 million in the West, $225 million and $238 million in Texas, $13 million and $19 million in the East and $4 million and $1 million in Retail for the three months ended September 30, 2019 and 2018, respectively.


(2)	Includes $31 million and $30 million of lease levelization and $20 million and $26 million of amortization expense for the three months ended September 30, 2019 and 2018, respectively.


(3)	Includes intersegment revenues of $395 million and $344 million in the West, $784 million and $447 million in Texas, $378 million and $152 million in the East and $8 million and $3 million in Retail for the nine months ended September 30, 2019 and 2018, respectively.


(4)	Includes $(4) million and $(5) million of lease levelization and $59 million and $79 million of amortization expense for the nine months ended September 30, 2019 and 2018, respectively.