Regulatory Matters (Details) - USD ($) $ in Millions										12 Months Ended
	Nov. 25, 2019	Aug. 20, 2019	Jul. 08, 2019	May 02, 2019	Feb. 01, 2019	Dec. 06, 2018	Dec. 05, 2018	Nov. 16, 2018	Jul. 06, 2018	Dec. 31, 2019
Regulatory Assets [Line Items]
Deferral of investigation and remediation of costs associated with gas utilities former MGP sites										10 years
Deferral of costs associated with tree trimming surge, period of deferral										3 years
DTE Electric | MPSC | 2018 Electric Rate Case Filing
Regulatory Assets [Line Items]
Requested rate increase					$ 248.6				$ 328.0
Return on equity, percent				10.00%					10.00%
Return on equity, requested percent									10.50%
Approved rate increase				$ 125.0
DTE Electric | MPSC | 2019 Electric Rate Case Filing
Regulatory Assets [Line Items]
Requested rate increase			$ 351.0
Return on equity, percent			10.00%
Return on equity, requested percent			10.50%
DTE Electric | MPSC | 2016 DTE Electric Depreciation Case Filing
Regulatory Assets [Line Items]
Approved depreciation rate increase						3.72%	3.06%
DTE Gas
Regulatory Assets [Line Items]
Calculation C, reduction of annual revenue requirement, requested								$ 12.0
Calculation C, reduction of annual revenue requirement, approved		$ 13.0
DTE Gas | MPSC | 2019 Gas Rate Case Filing
Regulatory Assets [Line Items]
Requested rate increase	$ 204.0
Return on equity, percent	10.00%
Return on equity, requested percent	10.50%
Customer360 deferred costs
Regulatory Assets [Line Items]
Approved amortization period										15 years
Nuclear Performance Evaluation and Review Committee Tracker
Regulatory Assets [Line Items]
Approved amortization period										5 years