Inter-segment billing for goods and services exchanged between segments is based upon tariffed or market-based prices of the provider and primarily consists of the sale of reduced emissions fuel, power sales, and natural gas sales in the following segments:



	Year Ended December 31,
	2018		2017		2016
	(In millions)
Electric	$	52	$	48	$	43
Gas	12		8		9
Gas Storage and Pipelines	36		42		9
Power and Industrial Projects	642		569		602
Energy Trading	27		35		39
Corporate and Other	2		2		2
	$	771	$	704	$	704

Financial data of DTE Energy's business segments follows:



	Electric		Gas		Gas Storage and Pipelines		Power and Industrial Projects		Energy Trading		Corporate and Other		Reclassifications and Eliminations		Total
	(In millions)
2018
Operating Revenues — Utility operations	$	5,298	1,436		—		—		—		—		(64	)	$	6,670
Operating Revenues — Non-utility operations	$	—	—		485		2,204		5,557		3		(707	)	$	7,542
Depreciation and amortization	$	836	133		82		67		5		1		—		$	1,124
Interest expense	$	283	70		68		31		6		220		(119	)	$	559
Interest income	$	—	(6	)	(9	)	(9	)	(3	)	(104	)	119		$	(12	)
Equity in earnings of equity method investees	$	—	2		123		3		—		4		—		$	132
Income Tax Expense (Benefit)	$	193	67		68		(195	)	13		(48	)	—		$	98
Net Income (Loss) Attributable to DTE Energy Company	$	664	150		235		161		39		(129	)	—		$	1,120
Investment in equity method investees	$	7	12		1,585		134		—		33		—		$	1,771
Capital expenditures and acquisitions	$	1,979	460		176		91		5		2		—		$	2,713
Goodwill	$	1,208	743		299		26		17		—		—		$	2,293
Total Assets	$	22,501	5,378		3,161		495		909		6,153		(2,309	)	$	36,288



	Electric		Gas		Gas Storage and Pipelines		Power and Industrial Projects		Energy Trading		Corporate and Other		Reclassifications and Eliminations		Total
	(In millions)
2017
Operating Revenues — Utility operations	$	5,102	1,388		—		—		—		—		(56	)	$	6,434
Operating Revenues — Non-utility operations	$	—	—		453		2,089		4,277		2		(648	)	$	6,173
Depreciation and amortization	$	753	123		76		72		5		1		—		$	1,030
Interest expense	$	274	65		77		29		5		192		(106	)	$	536
Interest income	$	—	(7	)	(14	)	(7	)	(2	)	(88	)	106		$	(12	)
Equity in earnings of equity method investees	$	1	2		90		9		—		—		—		$	102
Income Tax Expense (Benefit)	$	321	78		(30	)	(195	)	49		(48	)	—		$	175
Net Income (Loss) Attributable to DTE Energy Company	$	606	146		275		138		72		(103	)	—		$	1,134
Investment in equity method investees	$	7	11		879		150		—		26		—		$	1,073
Capital expenditures and acquisitions	$	1,574	463		137		56		7		13		—		$	2,250
Goodwill	$	1,208	743		299		26		17		—		—		$	2,293
Total Assets	$	21,163	5,072		2,594		593		725		5,324		(1,704	)	$	33,767

_____________________________________


(a)	Includes Income Tax Expense (Benefit) of $(5) million, $(115) million, $(21) million, $2 million, and $34 million for Electric — non-utility, Gas Storage and Pipelines, Power and Industrial Projects, Energy Trading, and Corporate and Other, respectively, related to the enactment of the TCJA.



	Electric			Gas		Gas Storage and Pipelines		Power and Industrial Projects		Energy Trading		Corporate and Other		Reclassifications and Eliminations		Total
	(In millions)
2016
Operating Revenues — Utility operations	$	5,225		1,324		—		—		—		—		(52	)	$	6,497
Operating Revenues — Non-utility operations	$	—		—		302		1,906		2,575		2		(652	)	$	4,133
Depreciation and amortization	$	750		106		45		72		3		—		—		$	976
Interest expense	$	264		60		39		32		6		148		(77	)	$	472
Interest income	$	(8	)	(6	)	(9	)	(8	)	(1	)	(65	)	77		$	(20	)
Equity in earnings of equity method investees	$	2		6		60		—		—		—		—		$	68
Income Tax Expense (Benefit)	$	353		77		71		(140	)	(29	)	(61	)	—		$	271
Net Income (Loss) Attributable to DTE Energy Company	$	622		138		119		95		(45	)	(61	)	—		$	868
Investment in equity method investees	$	11		10		538		166		—		27		—		$	752
Capital expenditures and acquisitions	$	1,503		395		1,322		39		7		3		—		$	3,269
Goodwill	$	1,208		743		292		26		17		—		—		$	2,286
Total Assets	$	20,417		4,729		2,417		683		660		4,648		(1,513	)	$	32,041