Significant Accounting Policies (Note)

3 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

Significant Accounting Policies [Text Block]

SIGNIFICANT ACCOUNTING POLICIES

Comprehensive Income

Comprehensive income is the change in common shareholder’s equity during a period from transactions and events from non-owner sources, including net income. As shown in the following table, amounts recorded to accumulated other comprehensive loss for the three months ended March 31, 2013 reflected changes in benefit obligations (net of tax).

	Changes in Accumulated Other Comprehensive Loss by Component
	For The Three Months Ended March 31, 2013
	Benefit Obligations (a)			Total
	(In millions)
Beginning balance, January 1, 2013	$	(22	)	$	(22	)
Other comprehensive income before reclassifications	—			—
Amounts reclassified from accumulated other comprehensive income	—			—
Net current-period other comprehensive income	—			—
Ending balance, March 31, 2013	$	(22	)	$	(22	)

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(a) The amounts reclassified from accumulated other comprehensive income are included in the computation of the net periodic pension cost (see Retirement Benefits and Trusteed Assets Note 10).

Income Taxes

The Company had $3 million of unrecognized tax benefits at March 31, 2013, that, if recognized, would favorably impact its effective tax rate. The Company does not anticipate any material changes to the unrecognized tax benefits in the next twelve months.

Stock-Based Compensation

The Company received an allocation of costs from DTE Energy associated with stock-based compensation of $13 million and $9 million for the three months ended March 31, 2013 and March 31, 2012, respectively.