The tables below show our financial data for our segments for the periods indicated (in millions):



	Three Months Ended June 30, 2017
	West			Texas			East			Consolidation and Elimination			Total
Revenues from external customers	$	401		$	797		$	886		$	—		$	2,084
Intersegment revenues	—			5			2			(7		)	—
Total operating revenues	$	401		$	802		$	888		$	(7	)	$	2,084
Commodity Margin	$	244		$	167		$	236		$	—		$	647
Add: Mark-to-market commodity activity, net and other⁽¹⁾	(38		)	(30		)	(18		)	(6		)	(92		)
Less:
Plant operating expense	111			109			89			(7		)	302
Depreciation and amortization expense	63			65			58			—			186
Sales, general and other administrative expense	8			21			11			—			40
Other operating expenses	8			3			8			1			20
(Income) from unconsolidated subsidiaries	—			—			(6		)	—			(6		)
Income (loss) from operations	16			(61		)	58			—			13
Interest expense													154
Debt extinguishment costs and other (income) expense, net													8
Loss before income taxes													$	(149	)



	Three Months Ended June 30, 2016
	West			Texas		East			Consolidation and Elimination			Total
Revenues from external customers	$	211		$	530	$	423		$	—		$	1,164
Intersegment revenues	1			4		4			(9		)	—
Total operating revenues	$	212		$	534	$	427		$	(9	)	$	1,164
Commodity Margin	$	254		$	160	$	243		$	—		$	657
Add: Mark-to-market commodity activity, net and other⁽¹⁾	(62		)	7		28			(8		)	(35		)
Less:
Plant operating expense	98			85		96			(8		)	271
Depreciation and amortization expense	56			53		53			—			162
Sales, general and other administrative expense	8			14		12			1			35
Other operating expenses	7			2		10			(2		)	17
(Income) from unconsolidated subsidiaries	—			—		(3		)	—			(3		)
Income from operations	23			13		103			1			140
Interest expense												157
Debt extinguishment costs and other (income) expense, net												21
Loss before income taxes												$	(38	)



	Six Months Ended June 30, 2017
	West		Texas			East			Consolidation and Elimination			Total
Revenues from external customers	$	1,113	$	1,596		$	1,656		$	—		$	4,365
Intersegment revenues	2		8			4			(14		)	—
Total operating revenues	$	1,115	$	1,604		$	1,660		$	(14	)	$	4,365
Commodity Margin	$	465	$	315		$	425		$	—		$	1,205
Add: Mark-to-market commodity activity, net and other⁽²⁾	39		(60		)	(26		)	(14		)	(61		)
Less:
Plant operating expense	208		205			185			(14		)	584
Depreciation and amortization expense	154		127			111			—			392
Sales, general and other administrative expense	21		38			21			—			80
Other operating expenses	17		6			17			—			40
(Gain) on sale of assets, net	—		—			(27		)	—			(27		)
(Income) from unconsolidated subsidiaries	—		—			(10		)	—			(10		)
Income (loss) from operations	104		(121		)	102			—			85
Interest expense												313
Debt extinguishment costs and other (income) expense, net												34
Loss before income taxes												$	(262	)



	Six Months Ended June 30, 2016
	West			Texas			East			Consolidation and Elimination			Total
Revenues from external customers	$	635		$	1,062		$	1,082		$	—		$	2,779
Intersegment revenues	3			7			7			(17		)	—
Total operating revenues	$	638		$	1,069		$	1,089		$	(17	)	$	2,779
Commodity Margin	$	451		$	313		$	473		$	—		$	1,237
Add: Mark-to-market commodity activity, net and other⁽²⁾	(16		)	(103		)	7			(14		)	(126		)
Less:
Plant operating expense	189			171			180			(14		)	526
Depreciation and amortization expense	125			106			111			—			342
Sales, general and other administrative expense	18			30			24			1			73
Other operating expenses	15			4			20			(2		)	37
(Income) from unconsolidated subsidiaries	—			—			(10		)	—			(10		)
Income (loss) from operations	88			(101		)	155			1			143
Interest expense													314
Debt extinguishment costs and other (income) expense, net													26
Loss before income taxes													$	(197	)

_________


(1)	Includes $(24) million and $(20) million of lease levelization and $44 million and $27 million of amortization expense for the three months ended June 30, 2017 and 2016, respectively.


(2)	Includes $(46) million and $(42) million of lease levelization and $104 million and $54 million of amortization expense for the six months ended June 30, 2017 and 2016, respectively.