Consolidated Statements of Financial Position (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 48	$ 52
Restricted cash, principally Securitization	120	123
Accounts receivable (less allowance for doubtful accounts of $54 and $55, respectively)
Customer	1,504	1,542
Other	94	127
Inventories
Fuel and gas	512	363
Materials and supplies	292	265
Derivative assets	128	99
Regulatory assets	76	26
Other	313	209
Total Current Assets	3,087	2,806
Investments
Nuclear decommissioning trust funds	1,241	1,191
Other	628	603
Total Investments	1,869	1,794
Property
Property, plant and equipment	26,538	25,123
Less accumulated depreciation, depletion and amortization	(9,718)	(9,323)
Property, plant and equipment, net	16,820	15,800
Other Assets
Goodwill	2,018	2,018
Regulatory assets	3,651	2,837
Securitized regulatory assets	34	231
Intangible assets	102	122
Notes receivable	90	102
Derivative assets	44	27
Other	259	198
Total Noncurrent Assets	6,198	5,535
Total Assets	27,974	25,935
Current Liabilities
Accounts payable	973	962
Accrued interest	86	90
Dividends payable	122	116
Short-term borrowings	398	131
Current portion long-term debt, including capital leases	274	898
Derivative liabilities	77	195
Regulatory liabilities	153	302
Other	494	495
Total Current Liabilities	2,577	3,189
Long-Term Debt (net of current portion)
Mortgage bonds, notes and other	7,860	6,618
Securitization bonds	0	105
Junior subordinated debentures	480	480
Capital lease obligations	3	11
Total Long-Term Debt (net of current portion)	8,343	7,214
Other Liabilities
Deferred income taxes	3,776	3,321
Regulatory liabilities	667	862
Asset retirement obligations	1,962	1,827
Unamortized investment tax credit	41	47
Derivative liabilities	8	43
Accrued pension liability	1,280	653
Accrued postretirement liability	515	350
Nuclear decommissioning	182	178
Other	281	297
Total Noncurrent Liabilities	8,712	7,578
Commitments and Contingencies (Notes 8 and 17)
Equity
Common stock, without par value, 400,000,000 shares authorized, 176,991,231 and 177,087,230 shares issued and outstanding, respectively	3,904	3,907
Retained earnings	4,578	4,150
Accumulated other comprehensive loss	(155)	(136)
Total DTE Energy Company Equity	8,327	7,921
Noncontrolling interests	15	33
Total Equity	8,342	7,954
Total Liabilities and Equity	$ 27,974	$ 25,935