Consolidated Statements of Financial Position - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Current Assets
Cash and cash equivalents	$ 66	$ 92
Restricted cash	23	21
Accounts receivable (less allowance for doubtful accounts)
Customer	1,758	1,522
Other	98	71
Inventories
Fuel and gas	399	416
Materials and supplies	380	356
Derivative assets	103	47
Regulatory assets	55	42
Other	199	195
Total Current Assets	3,081	2,762
Investments
Nuclear decommissioning trust funds	1,492	1,320
Investments in equity method investees	1,073	752
Other	232	201
Total Investments	2,797	2,273
Property
Property, plant, and equipment	31,424	30,029
Accumulated depreciation and amortization	(10,703)	(10,299)
Property, plant and equipment, net	20,721	19,730
Other Assets
Goodwill	2,293	2,286
Regulatory assets	3,723	3,871
Intangible assets	867	842
Notes receivable	73	73
Derivative assets	51	34
Other	161	170
Total Other Assets	7,168	7,276
Total Assets	33,767	32,041
Current Liabilities
Accounts payable	1,171	1,079
Accounts payable
Accrued interest	111	96
Dividends payable	158	148
Short-term borrowings	621	499
Current portion long-term debt, including capital leases	109	14
Derivative liabilities	99	69
Regulatory liabilities	18	34
Short-term borrowings
Other	525	498
Total Current Liabilities	2,812	2,437
Long-Term Debt (net of current portion)
Mortgage bonds, notes, and other	11,039	10,506
Junior subordinated debentures	1,145	756
Capital lease obligations	1	7
Total Long-Term Debt (net of current portion)	12,185	11,269
Other Liabilities
Deferred income taxes	1,888	4,162
Regulatory liabilities	2,875	555
Asset retirement obligations	2,320	2,197
Unamortized investment tax credit	122	93
Derivative liabilities	47	98
Accrued pension liability	924	1,152
Accrued postretirement liability	61	36
Nuclear decommissioning	220	194
Other	323	349
Total Other Liabilities	8,780	8,836
Commitments and Contingencies
Equity
Common stock	3,989	4,030
Retained earnings	5,643	5,114
Accumulated other comprehensive (loss) income	(120)	(133)
Total DTE Energy Company/DTE Electric Company Equity	9,512	9,011
Noncontrolling interests	478	488
Total Equity	9,990	9,499
Total Liabilities and Equity	33,767	32,041
DTE Electric
Current Assets
Cash and cash equivalents	15	13
Accounts receivable (less allowance for doubtful accounts)
Customer	791	728
Affiliates	20	12
Other	37	29
Inventories
Fuel and gas	190	225
Materials and supplies	275	271
Regulatory assets	50	36
Other	68	63
Total Current Assets	1,446	1,377
Investments
Nuclear decommissioning trust funds	1,492	1,320
Other	36	36
Total Investments	1,528	1,356
Property
Property, plant, and equipment	22,972	22,094
Accumulated depreciation and amortization	(7,984)	(7,721)
Property, plant and equipment, net	14,988	14,373
Other Assets
Regulatory assets	3,005	3,113
Intangible assets	25	31
Prepaid postretirement costs — affiliates	113	114
Other	123	125
Total Other Assets	3,266	3,383
Total Assets	21,228	20,489
Accounts payable
Affiliates	52	58
Other	416	452
Accrued interest	72	65
Current portion long-term debt, including capital leases	5	6
Regulatory liabilities	17	27
Short-term borrowings
Affiliates	116	117
Other	238	62
Other	145	146
Total Current Liabilities	1,061	933
Long-Term Debt (net of current portion)
Mortgage bonds, notes, and other	6,017	5,878
Capital lease obligations	1	7
Total Long-Term Debt (net of current portion)	6,018	5,885
Other Liabilities
Deferred income taxes	2,088	3,793
Regulatory liabilities	2,137	229
Asset retirement obligations	2,125	2,012
Unamortized investment tax credit	120	90
Nuclear decommissioning	220	194
Accrued pension liability — affiliates	811	1,008
Accrued postretirement liability — affiliates	311	269
Other	72	81
Total Other Liabilities	7,884	7,676
Commitments and Contingencies
Equity
Common stock	4,306	4,206
Retained earnings	1,956	1,787
Accumulated other comprehensive (loss) income	3	2
Total DTE Energy Company/DTE Electric Company Equity	6,265	5,995
Total Liabilities and Equity	$ 21,228	$ 20,489