Consolidated Statements of Financial Position (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 57	$ 68
Restricted cash, principally Securitization	86	147
Accounts receivable (less allowance for doubtful accounts of $160 and $162, respectively)
Customer	1,262	1,317
Other	122	90
Inventories
Fuel and gas	447	572
Materials and supplies	219	219
Deferred income taxes	62	51
Derivative assets	277	222
Regulatory assets	232	314
Other	187	196
Total Current Assets	2,951	3,196
Investments
Nuclear decommissioning trust funds	1,004	937
Other	532	525
Total Investments	1,536	1,462
Property
Property, plant and equipment	22,780	22,541
Less accumulated depreciation, depletion and amortization	(8,856)	(8,795)
Property, plant and equipment, net	13,924	13,746
Other Assets
Goodwill	2,020	2,020
Regulatory assets	4,423	4,539
Securitized regulatory assets	536	577
Intangible assets	70	73
Notes receivable	120	123
Derivative assets	78	74
Other	188	199
Total Noncurrent Assets	7,435	7,605
Total Assets	25,846	26,009
Current Liabilities
Accounts payable	690	782
Accrued interest	121	95
Dividends payable	100	99
Short-term borrowings	313	419
Current portion long-term debt, including capital leases	530	526
Derivative liabilities	238	158
Gas inventory equalization	114	0
Other	424	549
Total Current Liabilities	2,530	2,628
Long-Term Debt (net of current portion)
Mortgage bonds, notes and other	6,404	6,405
Securitization bonds	391	479
Junior subordinated debentures	280	280
Capital lease obligations	18	23
Total Long-Term Debt (net of current portion)	7,093	7,187
Other Liabilities
Deferred income taxes	3,188	3,116
Regulatory liabilities	1,018	1,019
Asset retirement obligations	1,615	1,591
Unamortized investment tax credit	63	65
Derivative liabilities	99	89
Accrued pension liability	1,300	1,298
Accrued postretirement liability	1,342	1,484
Nuclear decommissioning	156	148
Other	295	331
Total Noncurrent Liabilities	9,076	9,141
Equity
Common stock, without par value, 400,000,000 shares authorized, 170,112, 217 and 169,247,282 shares issued and outstanding, respectively	3,453	3,417
Retained earnings	3,804	3,750
Accumulated other comprehensive loss	(153)	(158)
Total DTE Energy Company Equity	7,104	7,009
Noncontrolling interests	43	44
Total Equity	7,147	7,053
Total Liabilities and Equity	$ 25,846	$ 26,009