Organization and Basis of Presentation

6 Months Ended

Jun. 30, 2011

Organization and Basis of Presentation [Abstract]

ORGANIZATION AND BASIS OF PRESENTATION

NOTE 1 — ORGANIZATION AND BASIS OF PRESENTATION

Corporate Structure

DTE Energy owns the following businesses:

• Detroit Edison, an electric utility engaged in the generation, purchase, distribution and sale of electricity to approximately 2.1 million customers in southeastern Michigan;

• MichCon, a natural gas utility engaged in the purchase, storage, transportation, distribution and sale of natural gas to approximately 1.2 million customers throughout Michigan and the sale of storage and transportation capacity; and

• Other businesses involved in (1) natural gas pipelines, gathering and storage; (2) unconventional gas and oil project development and production; (3) power and industrial projects and coal transportation and marketing; and (4) energy marketing and trading operations.

Detroit Edison and MichCon are regulated by the MPSC. Certain activities of Detroit Edison and MichCon, as well as various other aspects of businesses under DTE Energy are regulated by the FERC. In addition, the Company is regulated by other federal and state regulatory agencies including the NRC, the EPA and the MDEQ.

Reference in this report to “we,” “us,” “our,” “Company” or “DTE” are to DTE Energy and its subsidiaries, collectively.

Basis of Presentation

These Consolidated Financial Statements should be read in conjunction with the Notes to Consolidated Financial Statements included in the 2010 Annual Report on Form 10-K.

The accompanying Consolidated Financial Statements are prepared using accounting principles generally accepted in the United States of America. These accounting principles require management to use estimates and assumptions that impact reported amounts of assets, liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities. Actual results may differ from the Company’s estimates.

The Consolidated Financial Statements are unaudited, but in the Company’s opinion include all adjustments necessary to a fair statement of the results for the interim periods. All adjustments are of a normal recurring nature, except as otherwise disclosed in these Consolidated Financial Statements and Notes to Consolidated Financial Statements. Financial results for this interim period are not necessarily indicative of results that may be expected for any other interim period or for the fiscal year ending December 31, 2011.

Principles of Consolidation

The Company consolidates all majority owned subsidiaries and investments in entities in which it has controlling influence. Non-majority owned investments are accounted for using the equity method when the Company is able to influence the operating policies of the investee. Non-majority owned investments include investments in limited liability companies, partnerships or joint ventures. When the Company does not influence the operating policies of an investee, the cost method is used. These consolidated financial statements also reflect the Company’s proportionate interests in certain jointly owned utility plant. The Company eliminates all intercompany balances and transactions.

The Company evaluates whether an entity is a VIE whenever reconsideration events occur. The Company consolidates VIEs for which it is the primary beneficiary. If the Company is not the primary beneficiary and an ownership interest is held, the VIE is accounted for under the equity method of accounting. When assessing the determination of the primary beneficiary, the Company considers all relevant facts and circumstances, including: the power, through voting or similar rights, to direct the activities of the VIE that most significantly impact the VIE’s economic performance and the obligation to absorb the expected losses and/or the right to receive the expected returns of the VIE. The Company performs ongoing reassessments of all VIEs to determine if the primary beneficiary status has changed.

Legal entities within the Company’s Power and Industrial Projects segment enter into long-term contractual arrangements with customers to supply energy-related products or services. The entities are generally designed to pass-through the commodity risk associated with these contracts to the customers, with the Company retaining operational and customer default risk. These entities generally are VIEs. In addition, the Company has interests in certain VIEs that we share control of all significant activities for those entities with our partners, and therefore are accounted for under the equity method.

The Company has variable interests in VIEs through certain of its long-term purchase contracts. As of June 30, 2011, the carrying amount of assets and liabilities in the Consolidated Statement of Financial Position that relate to its variable interests under long-term purchase contracts are predominately related to working capital accounts and generally represent the amounts owed by the Company for the deliveries associated with the current billing cycle under the contracts. The Company has not provided any form of financial support associated with these long-term contracts. There is no significant potential exposure to loss as a result of its variable interests through these long-term purchase contracts.

In 2001, Detroit Edison financed a regulatory asset related to Fermi 2 and certain other regulatory assets through the sale of rate reduction bonds by a wholly owned special purpose entity, Securitization. Detroit Edison performs servicing activities including billing and collecting surcharge revenue for Securitization. This entity is a VIE, and is consolidated as the Company is the primary beneficiary.

DTE Energy has interests in two unconsolidated trusts that were formed for the purpose of issuing preferred securities and lending the gross proceeds to the Company. The assets of the trusts are debt securities of DTE Energy with terms similar to those of the related preferred securities. Payments the Company makes are used by the trusts to make cash distributions on the preferred securities it has issued. DTE Energy has reviewed these interests and has determined they are VIEs, but the Company is not the primary beneficiary as it does not have variable interests in the trusts and therefore, the trusts are not consolidated by the Company.

The maximum risk exposure for consolidated VIEs is reflected on the Company’s Consolidated Statements of Financial Position. For non-consolidated VIEs, the maximum risk exposure is generally limited to its investment and amounts which it has guaranteed.

The following table summarizes the major balance sheet items for consolidated VIEs as of June 30, 2011 and December 31, 2010. Amounts at June 30, 2011 for consolidated VIEs that are either (1) assets that can be used only to settle obligations of the VIE or (2) liabilities for which creditors do not have recourse to the general credit of the primary beneficiary are segregated in the restricted amounts column. Entities, in which the Company holds a majority voting interest and is the primary beneficiary, that meet the definition of a business and whose assets can be used for purposes other than the settlement of the VIE’s obligations have been excluded from the table below.

	June 30, 2011
							Restricted
(in Millions)	Securitization		Other		Total		Amounts
ASSETS
Cash and cash equivalents	$	—	$	11	$	11	$	—
Restricted cash		106		5		111		111
Accounts receivable		34		16		50		36
Inventories		—		113		113		—
Other current assets		—		1		1		—
Property, plant and equipment		—		60		60		26
Securitized regulatory assets		656		—		656		656
Other assets		12		8		20		20
	$	808	$	214	$	1,022	$	849
LIABILITIES
Accounts payable and accrued current liabilities	$	16	$	63	$	79	$	16
Current portion long-term debt, including capital leases		158		7		165		165
Other current liabilities		59		2		61		61
Mortgage bonds, notes and other		—		32		32		32
Securitization bonds		559		—		559		559
Capital lease obligations		—		21		21		21
Other long term liabilities		6		2		8		8
	$	798	$	127	$	925	$	862

	December 31, 2010
							Restricted
(in Millions)	Securitization		Other		Total		Amounts
ASSETS
Cash and cash equivalents	$	—	$	4	$	4	$	—
Restricted cash		104		8		112		112
Accounts receivable		42		8		50		44
Inventories		—		99		99		—
Other current assets		—		1		1		—
Property, plant and equipment		—		54		54		38
Securitized regulatory assets		729		—		729		729
Other assets		13		9		22		21
	$	888	$	183	$	1,071	$	944
LIABILITIES
Accounts payable and accrued current liabilities	$	17	$	27	$	44	$	18
Current portion long-term debt, including capital leases		150		7		157		157
Other current liabilities		62		6		68		66
Mortgage bonds, notes and other		—		35		35		35
Securitization bonds		643		—		643		643
Capital lease obligations		—		23		23		23
Other long term liabilities		6		7		13		12
	$	878	$	105	$	983	$	954

Amounts for non-consolidated VIEs as June 30, 2011 and December 31, 2010 were as follows:

	June 30,		December 31,
(in Millions)	2011		2010
Other investments	$	113	$	98
Note receivable		5		6
Trust preferred — linked securities		289		289