New Accounting Pronouncements (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption	$ 3
Net cash from operating activities	2,084	$ 1,916	$ 1,845
Net cash from financing activities	(1,359)	(277)	(211)
Accounting standards update 2015-03 | Liability
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance cost	75
Accounting standards update 2015-03 | Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance cost	(75)
New Accounting Pronouncement, Early Adoption, Effect | Accounting standards update 2016-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effective income tax rate reconciliation, share-based compensation, excess tax benefit, amount	1
Cumulative effect of new accounting principle in period of adoption	3
Net cash from operating activities	4	5	6
Net cash from financing activities	4	5	6
DTE Electric
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash from operating activities	1,655	1,150	1,384
Net cash from financing activities	184	$ (472)	$ 8
DTE Electric | Accounting standards update 2015-03 | Liability
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance cost	36
DTE Electric | Accounting standards update 2015-03 | Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt issuance cost	$ (36)