Acquisitions (Details Textuals) $ in Millions				1 Months Ended		12 Months Ended
	Dec. 04, 2019 USD ($)	Sep. 20, 2019 USD ($)	Sep. 12, 2019 USD ($) MW	Jan. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Business Acquisition [Line Items]
Liability for contingent consideration payment and related accretion expense					$ 379	$ 379	$ 0
Goodwill					2,464	2,464	2,293	$ 2,293
Operating Revenues — Non-utility operations						6,031	7,542	6,173
Net Income						1,172	$ 1,118	$ 1,112
Gas Storage and Pipelines | Generation Pipeline, LLC
Business Acquisition [Line Items]
Portion of consideration paid attributable to DTE Energy		50.00%
Gas Storage and Pipelines | Blue Union and LEAP
Business Acquisition [Line Items]
Total consideration provided for acquired entity	$ 2,740
Consideration paid for entity acquired, paid in cash	$ 2,360
Percent of assets acquired	100.00%
Contingent consideration to be paid upon completion	$ 378
Contingent payment, low end of range	0
Contingent payment, high end of range	385
Liability for contingent consideration payment and related accretion expense					1	1
Cash consideration paid and held in escrow	100
Goodwill	$ 171
Direct transaction costs incurred					18	18
Issuance costs related to acquisition financing					49	49
Operating Revenues — Non-utility operations					15
Net Income					3
Gas Storage and Pipelines | Blue Union and LEAP | Other long-term debt
Business Acquisition [Line Items]
Issuance costs related to acquisition financing					10	10
Gas Storage and Pipelines | Blue Union and LEAP | Common Stock
Business Acquisition [Line Items]
Issuance costs related to acquisition financing					$ 39	$ 39
Contract intangibles | Minimum
Business Acquisition [Line Items]
Intangible assets, amortization period						6 years
Contract intangibles | Maximum
Business Acquisition [Line Items]
Intangible assets, amortization period						26 years
Customer relationships | Minimum
Business Acquisition [Line Items]
Intangible assets, amortization period						25 years
Customer relationships | Maximum
Business Acquisition [Line Items]
Intangible assets, amortization period						40 years
Customer relationships | Gas Storage and Pipelines | Blue Union and LEAP
Business Acquisition [Line Items]
Intangible assets, amortization period	40 years
Intangible assets recorded as a result of acquisition	$ 1,473
Existing intangible asset weighted-average amortization life	13 years
DTE Sustainable Generation | Electric | Heritage Sustainable Energy, Renewable Energy Project
Business Acquisition [Line Items]
Amount of power associated with purchase of renewable energy project | MW			89
Total consideration provided for acquired entity			$ 175
Consideration paid for entity acquired, paid in cash			174
DTE Sustainable Generation | Contract intangibles | Electric | Heritage Sustainable Energy, Renewable Energy Project
Business Acquisition [Line Items]
Intangible assets recorded as a result of acquisition			$ 109
DTE Sustainable Generation | Contract intangibles | Electric | Heritage Sustainable Energy, Renewable Energy Project | Minimum
Business Acquisition [Line Items]
Intangible assets, amortization period			11 years
DTE Sustainable Generation | Contract intangibles | Electric | Heritage Sustainable Energy, Renewable Energy Project | Maximum
Business Acquisition [Line Items]
Intangible assets, amortization period			13 years
DTE Sustainable Generation | Subsequent Event | Electric | Heritage Sustainable Energy, Additional Renewable Energy Project
Business Acquisition [Line Items]
Consideration paid for entity acquired, paid in cash				$ 33
NEXUS | Gas Storage and Pipelines | Generation Pipeline, LLC
Business Acquisition [Line Items]
Total consideration provided for acquired entity		$ 163