Effective Income Tax Rate Reconcilation, Share-based Compensation, Excess Tax Benefit, Percent

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- Definition

Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount

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- Definition

Increase (Decrease) in Effective Tax Rate from Prior Year, Percent

+ References

No definition available.

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- Definition

Significant Accounting Policies [Line Items]

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- Definition

Tax Cuts And Jobs Act, Measurement Period Adjustment, Increase (Decrease) In Effective Tax Rate

+ References

No definition available.

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- Definition

Tax Cuts And Jobs Act, Measurement Period Adjustment, income Tax Expense (Benefit)

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
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-Subparagraph (SAB Topic 14.F)
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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Unrecognized cost of unvested share-based compensation awards.

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-Name Accounting Standards Codification
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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(8))
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- Definition

Amount of unrecognized tax benefits.

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Significant Accounting Policies (Details Textuals) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Significant Accounting Policies [Line Items]
Effective Tax Rate	16.00%	22.00%
Effective tax rate increase (decrease)	(6.00%)
Income tax (expense) benefit due to remeasurement of deferred taxes	$ 21
Measurement period increase (decrease) in effective tax rate	5.00%
ASU 2016-09 excess tax benefit amount	$ 10
ASU 2016-09 excess tax benefit (percentage)	2.00%
Unrecognized tax benefits	$ 8
Unrecognized tax benefits that would impact effective tax rate	8
Unrecognized compensation cost	$ 111
Recognition period (in years)	1 year 9 months
DTE Electric
Significant Accounting Policies [Line Items]
Effective Tax Rate	25.00%	35.00%
Effective tax rate increase (decrease)	(10.00%)
Income tax (expense) benefit due to remeasurement of deferred taxes	$ 8
Measurement period increase (decrease) in effective tax rate	4.00%
Unrecognized tax benefits	$ 10
Unrecognized tax benefits that would impact effective tax rate	10
DTE Electric \| DTE Energy
Significant Accounting Policies [Line Items]
Income tax receivable	13			$ 12
Allocated costs	$ 9	$ 8
Forecast
Significant Accounting Policies [Line Items]
Effective Tax Rate			13.00%
Forecast \| DTE Electric
Significant Accounting Policies [Line Items]
Effective Tax Rate			22.00%