Long-Term Debt (Details Textual) - USD ($)			1 Months Ended
	Oct. 20, 2016	Oct. 05, 2016	Sep. 30, 2016	Oct. 31, 2016	Aug. 31, 2016
Debt Instrument [Line Items]
Debt issued			$ 600,000,000
DTE Electric | Tax exempt revenue bonds | August 5.50% Tax Exempt Revenue Bonds Maturing 2029
Debt Instrument [Line Items]
Debt repurchased					$ 59,000,000
Interest rate					5.50%
DTE Electric | Tax exempt revenue bonds | September 1.45% Tax Exempt Revenue Bonds Maturing 2029
Debt Instrument [Line Items]
Interest rate			1.45%
Debt issued			$ 59,000,000
Term of debt			5 years
DTE Electric | Tax exempt revenue bonds | September 1.45% Tax Exempt Revenue Bonds Maturing 2030
Debt Instrument [Line Items]
Interest rate			1.45%
Debt issued			$ 82,000,000
Term of debt			5 years
Subsequent Event | Corporate Unit
Debt Instrument [Line Items]
Interest rate		6.50%
Debt issued		$ 675,000,000
Subsequent Event | Senior Notes
Debt Instrument [Line Items]
Interest rate		1.50%
Subsequent Event | Senior Notes | Series D 1.50% Senior Notes due 2019
Debt Instrument [Line Items]
Interest rate				1.50%
Debt issued				$ 400,000,000
Subsequent Event | Senior Notes | Series E 2.85% Senior Notes due 2026
Debt Instrument [Line Items]
Interest rate				2.85%
Debt issued				$ 600,000,000
Midstream Natural Gas Assets | Subsequent Event
Debt Instrument [Line Items]
Purchase price of assets	$ 1,300,000,000
Stock Purchase Contract | Subsequent Event
Debt Instrument [Line Items]
Share price per Corporate Unit under contract		$ 50
Common stock shares reserved for future issuance		9,000,000
Stock Purchase Contract | Subsequent Event | Corporate Unit
Debt Instrument [Line Items]
Interest rate		5.00%
Stock Purchase Contract | Minimum | Subsequent Event
Debt Instrument [Line Items]
Number of common stock shares for future issuance		5,800,000
Stock Purchase Contract | Maximum | Subsequent Event
Debt Instrument [Line Items]
Number of common stock shares for future issuance		7,300,000