Consolidated Statements of Financial Position (Unaudited) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 185	$ 68
Restricted cash, principally Securitization	110	147
Accounts receivable (less allowance for doubtful accounts of $153 and $162, respectively)
Customer	1,239	1,317
Other	164	90
Inventories
Fuel and gas	487	572
Materials and supplies	223	219
Deferred income taxes	65	51
Derivative assets	221	222
Regulatory assets	194	314
Other	162	196
Total Current Assets	3,050	3,196
Investments
Nuclear decommissioning trust funds	985	937
Other	533	525
Total Investments	1,518	1,462
Property
Property, plant and equipment	23,081	22,541
Less accumulated depreciation, depletion and amortization	(8,929)	(8,795)
Property, plant and equipment, net	14,152	13,746
Other Assets
Goodwill	2,020	2,020
Regulatory assets	4,390	4,539
Securitized regulatory assets	497	577
Intangible assets	67	73
Notes receivable	117	123
Derivative assets	75	74
Other	189	199
Total Noncurrent Assets	7,355	7,605
Total Assets	26,075	26,009
Current Liabilities
Accounts payable	728	782
Accrued interest	94	95
Dividends payable	207	99
Short-term borrowings	39	419
Current portion long-term debt, including capital leases	848	526
Derivative liabilities	211	158
Other	508	549
Total Current Liabilities	2,635	2,628
Long-Term Debt (net of current portion)
Mortgage bonds, notes and other	6,528	6,405
Securitization bonds	391	479
Junior subordinated debentures	280	280
Capital lease obligations	13	23
Total Long-Term Debt (net of current portion)	7,212	7,187
Other Liabilities
Deferred income taxes	3,263	3,116
Regulatory liabilities	1,007	1,019
Asset Retirement Obligations, Noncurrent	1,641	1,591
Unamortized investment tax credit	60	65
Derivative liabilities	62	89
Accrued pension liability	1,224	1,298
Accrued postretirement liability	1,341	1,484
Nuclear decommissioning	149	148
Other	297	331
Total Noncurrent Liabilities	9,044	9,141
Equity
Common stock, without par value, 400,000,000 shares authorized, 171,754, 812 and 169,247,282 shares issued and outstanding, respectively	3,549	3,417
Retained earnings	3,744	3,750
Accumulated other comprehensive loss	(151)	(158)
Total DTE Energy Company Equity	7,142	7,009
Noncontrolling interests	42	44
Total Equity	7,184	7,053
Total Liabilities and Equity	$ 26,075	$ 26,009