Segment and Related Information (Financial Data) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations	$ 8,243	$ 7,288	$ 6,845
Operating Revenues — Non-utility operations	10,985	7,676	4,578
Depreciation and amortization	1,468	1,377	1,292
Interest expense	675	630	601
Interest income	(46)	(22)	(29)
Equity earnings (losses) of equity method investees	(14)	38	26
Income Tax Expense (Benefit)	29	(130)	37
Net Income (Loss) Attributable to DTE Energy Company	1,083	907	1,368
Investments in equity method investees	165	187
Capital expenditures and acquisitions	3,378	3,772	3,983
Goodwill	1,993	1,993
Total Assets	42,683	39,719	45,496
Loss on extinguishment of debt	0	393	6
Continuing operations
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations		7,288	6,845
Operating Revenues — Non-utility operations		7,676	4,578
Depreciation and amortization		1,377	1,292
Interest expense		630	601
Interest income		(22)	(29)
Equity earnings (losses) of equity method investees		38	26
Income Tax Expense (Benefit)		(130)	37
Net Income (Loss) Attributable to DTE Energy Company		796	1,054
Investments in equity method investees		187	177
Capital expenditures and acquisitions		3,712	3,466
Goodwill		1,993	1,993
Total Assets		39,719	37,420
Discontinued operations
Segment Reporting Information [Line Items]
Net Income (Loss) Attributable to DTE Energy Company		111	314
Capital expenditures and acquisitions		60	517
Total Assets		0	8,076
Operating Segments | Electric
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations	6,397
Operating Revenues — Non-utility operations	15
Depreciation and amortization	1,218
Interest expense	372
Interest income	(8)
Equity earnings (losses) of equity method investees	0
Income Tax Expense (Benefit)	25
Net Income (Loss) Attributable to DTE Energy Company	956
Investments in equity method investees	6
Capital expenditures and acquisitions	2,620
Goodwill	1,208
Total Assets	30,342
Operating Segments | Electric | Continuing operations
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations		5,809	5,506
Operating Revenues — Non-utility operations		12	14
Depreciation and amortization		1,122	1,057
Interest expense		338	337
Interest income		0	(4)
Equity earnings (losses) of equity method investees		0	0
Income Tax Expense (Benefit)		104	108
Net Income (Loss) Attributable to DTE Energy Company		864	777
Investments in equity method investees		6	6
Capital expenditures and acquisitions		3,016	2,701
Goodwill		1,208	1,208
Total Assets		28,524	26,588
Operating Segments | Gas
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations	1,924
Operating Revenues — Non-utility operations	0
Depreciation and amortization	192
Interest expense	91
Interest income	(8)
Equity earnings (losses) of equity method investees	2
Income Tax Expense (Benefit)	88
Net Income (Loss) Attributable to DTE Energy Company	272
Investments in equity method investees	15
Capital expenditures and acquisitions	693
Goodwill	743
Total Assets	7,321
Operating Segments | Gas | Continuing operations
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations		1,553	1,414
Operating Revenues — Non-utility operations		0	0
Depreciation and amortization		177	157
Interest expense		81	80
Interest income		(6)	(5)
Equity earnings (losses) of equity method investees		1	1
Income Tax Expense (Benefit)		38	48
Net Income (Loss) Attributable to DTE Energy Company		214	186
Investments in equity method investees		13	12
Capital expenditures and acquisitions		621	574
Goodwill		743	743
Total Assets		6,729	6,339
Operating Segments | DTE Vantage
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations	0
Operating Revenues — Non-utility operations	848
Depreciation and amortization	52
Interest expense	15
Interest income	(28)
Equity earnings (losses) of equity method investees	0
Income Tax Expense (Benefit)	18
Net Income (Loss) Attributable to DTE Energy Company	92
Investments in equity method investees	111
Capital expenditures and acquisitions	62
Goodwill	25
Total Assets	1,077
Operating Segments | DTE Vantage | Continuing operations
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations		0	0
Operating Revenues — Non-utility operations		1,482	1,224
Depreciation and amortization		71	72
Interest expense		28	37
Interest income		(23)	(22)
Equity earnings (losses) of equity method investees		8	17
Income Tax Expense (Benefit)		(31)	(40)
Net Income (Loss) Attributable to DTE Energy Company		168	134
Investments in equity method investees		118	125
Capital expenditures and acquisitions		69	186
Goodwill		25	25
Total Assets		983	696
Operating Segments | Energy Trading
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations	0
Operating Revenues — Non-utility operations	10,308
Depreciation and amortization	5
Interest expense	17
Interest income	(6)
Equity earnings (losses) of equity method investees	0
Income Tax Expense (Benefit)	(31)
Net Income (Loss) Attributable to DTE Energy Company	(92)
Investments in equity method investees	0
Capital expenditures and acquisitions	3
Goodwill	17
Total Assets	1,385
Operating Segments | Energy Trading | Continuing operations
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations		0	0
Operating Revenues — Non-utility operations		6,831	3,863
Depreciation and amortization		6	5
Interest expense		5	6
Interest income		(1)	(2)
Equity earnings (losses) of equity method investees		0	0
Income Tax Expense (Benefit)		(27)	12
Net Income (Loss) Attributable to DTE Energy Company		(83)	36
Investments in equity method investees		0	0
Capital expenditures and acquisitions		6	5
Goodwill		17	17
Total Assets		1,174	807
Operating Segments | Corporate and Other
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations	0
Operating Revenues — Non-utility operations	0
Depreciation and amortization	1
Interest expense	210
Interest income	(26)
Equity earnings (losses) of equity method investees	(16)
Income Tax Expense (Benefit)	(71)
Net Income (Loss) Attributable to DTE Energy Company	(145)
Investments in equity method investees	33
Capital expenditures and acquisitions	0
Goodwill	0
Total Assets	4,409
Loss on extinguishment of debt		376
Deferred tax benefit for deferred tax remeasurement		85
Operating Segments | Corporate and Other | Continuing operations
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations		0	0
Operating Revenues — Non-utility operations		2	2
Depreciation and amortization		1	1
Interest expense		270	325
Interest income		(84)	(180)
Equity earnings (losses) of equity method investees		29	8
Income Tax Expense (Benefit)		(214)	(91)
Net Income (Loss) Attributable to DTE Energy Company		(367)	(79)
Investments in equity method investees		50	34
Capital expenditures and acquisitions		0	0
Goodwill		0	0
Total Assets		4,281	5,063
Reclassifications and Eliminations
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations	(78)
Operating Revenues — Non-utility operations	(186)
Depreciation and amortization	0
Interest expense	(30)
Interest income	30
Equity earnings (losses) of equity method investees	0
Income Tax Expense (Benefit)	0
Net Income (Loss) Attributable to DTE Energy Company	0
Investments in equity method investees	0
Capital expenditures and acquisitions	0
Goodwill	0
Total Assets	(1,851)
Reclassifications and Eliminations | Continuing operations
Segment Reporting Information [Line Items]
Operating Revenues — Utility operations		(74)	(75)
Operating Revenues — Non-utility operations		(651)	(525)
Depreciation and amortization		0	0
Interest expense		(92)	(184)
Interest income		92	184
Equity earnings (losses) of equity method investees		0	0
Income Tax Expense (Benefit)		0	0
Net Income (Loss) Attributable to DTE Energy Company		0	0
Investments in equity method investees		0	0
Capital expenditures and acquisitions		0	0
Goodwill		0	0
Total Assets		(1,972)	(2,073)
Reclassifications and Eliminations | Electric
Segment Reporting Information [Line Items]
Operating Revenues — Non-utility operations	$ (6)	$ (4)	$ (2)