Segment and Related Information (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Financial Data of Business Segments

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,
	2020		2019		2018
	(In millions)
Electric(a)	$	61	$	56	$	52
Gas	16		12		12
Gas Storage and Pipelines	26		27		36
Power and Industrial Projects	464		596		642
Energy Trading	31		22		27
Corporate and Other	2		2		2
	$	600	$	715	$	771

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(a)Inter-segment billing for the Electric segment includes $2 million relating to Non-utility operations for the year ended December 31, 2020.

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)
2020
Operating Revenues — Utility operations	$	5,506	1,414	—	—	—	—	(75)	$	6,845
Operating Revenues — Non-utility operations	$	14	—	754	1,224	3,863	2	(525)	$	5,332
Depreciation and amortization	$	1,057	157	151	72	5	1	—	$	1,443
Interest expense	$	337	80	113	37	6	331	(184)	$	720
Interest income	$	(4)	(5)	(9)	(22)	(2)	(180)	184	$	(38)
Equity in earnings of equity method investees	$	—	1	106	17	—	8	—	$	132
Income Tax Expense (Benefit)	$	108	48	116	(40)	12	(77)	—	$	167
Net Income (Loss) Attributable to DTE Energy Company	$	777	186	315	134	36	(80)	—	$	1,368
Investment in equity method investees	$	6	12	1,691	125	—	34	—	$	1,868
Capital expenditures and acquisitions	$	2,701	574	517	186	5	—	—	$	3,983
Goodwill	$	1,208	743	472	26	17	—	—	$	2,466
Total Assets	$	26,588	6,339	5,068	696	807	8,071	(2,073)	$	45,496

	Electric		Gas	Gas Storage and Pipelines	Power and Industrial Projects	Energy Trading	Corporate and Other	Reclassifications and Eliminations	Total
	(In millions)
2019
Operating Revenues — Utility operations	$	5,224	1,482	—	—	—	—	(68)	$	6,638
Operating Revenues — Non-utility operations	$	5	—	501	1,560	4,610	2	(647)	$	6,031
Depreciation and amortization	$	949	144	94	69	6	1	—	$	1,263
Interest expense	$	315	78	73	33	8	266	(132)	$	641
Interest income	$	(2)	(6)	(8)	(9)	(4)	(120)	132	$	(17)
Equity in earnings of equity method investees	$	1	2	97	14	—	(3)	—	$	111
Income Tax Expense (Benefit)	$	137	62	74	(63)	17	(75)	—	$	152
Net Income (Loss) Attributable to DTE Energy Company	$	714	185	204	133	49	(116)	—	$	1,169
Investment in equity method investees	$	5	11	1,685	130	—	31	—	$	1,862
Capital expenditures and acquisitions	$	2,368	530	2,510	54	5	—	—	$	5,467
Goodwill	$	1,208	743	470	26	17	—	—	$	2,464
Total Assets	$	24,617	5,717	4,832	537	798	7,610	(1,843)	$	42,268

	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