Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating Activities
Net Income	$ 922	$ 832
Net Income	929	847
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization	826	756
Nuclear fuel amortization	39	39
Allowance for equity funds used during construction	(20)	(17)
Deferred income taxes	118	261
Equity earnings of equity method investees	(99)	(77)
Dividends from equity method investees	48	55
Asset (gains) losses and impairments, net	11	5
Changes in assets and liabilities:
Accounts receivable, net	85	43
Inventories	11	(41)
Prepaid postretirement benefit costs	(45)	0
Accounts payable	9	25
Accrued pension liability	(205)	(230)
Accrued postretirement liability	(61)	(30)
Derivative assets and liabilities	24	(133)
Regulatory assets and liabilities	283	260
Other current and noncurrent assets and liabilities	101	(198)
Net cash from operating activities	2,047	1,550
Investing Activities
Plant and equipment expenditures — utility	(1,562)	(1,439)
Plant and equipment expenditures — non-utility	(217)	(133)
Proceeds from sale of nuclear decommissioning trust fund assets	810	951
Investment in nuclear decommissioning trust funds	(810)	(936)
Distributions from equity method investees	8	10
Contributions to equity method investees	(545)	(194)
Other	(20)	(61)
Net cash used for investing activities	(2,336)	(1,802)
Financing Activities
Issuance of long-term debt, net of issuance costs	1,433	1,010
Redemption of long-term debt	(105)	(385)
Short-term borrowings, net	(544)
Short-term borrowings, net		160
Issuance of common stock	7	0
Repurchase of common stock	0	(51)
Dividends on common stock	(459)	(444)
REF contributions from noncontrolling interests	43	34
Distributions to noncontrolling interests	(31)	(29)
Other	(40)	(70)
Net cash from (used for) financing activities	304	225
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash	15	(27)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	89	113
Cash, Cash Equivalents, and Restricted Cash at End of Period	104	86
Cash and Cash Equivalents at Beginning of Period	66
Cash and Cash Equivalents at End of Period	84
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	275	222
DTE Electric
Operating Activities
Net Income	608	463
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization	616	549
Nuclear fuel amortization	39	39
Allowance for equity funds used during construction	(14)	(14)
Deferred income taxes	156	248
Changes in assets and liabilities:
Accounts receivable, net	(89)	(104)
Inventories	43	32
Accounts payable	18	32
Accrued pension liability — affiliates	(185)	(182)
Accrued postretirement liability — affiliates	(71)	(17)
Regulatory assets and liabilities	195	223
Other current and noncurrent assets and liabilities	(71)	(174)
Net cash from operating activities	1,245	1,095
Investing Activities
Plant and equipment expenditures	(1,248)	(1,103)
Proceeds from sale of nuclear decommissioning trust fund assets	810	951
Investment in nuclear decommissioning trust funds	(810)	(936)
Other	(7)	0
Net cash used for investing activities	(1,255)	(1,088)
Financing Activities
Issuance of long-term debt, net of issuance costs	520	435
Redemption of long-term debt	0	(300)
Short-term borrowings, net — affiliate	27	(51)
Short-term borrowings, net — other	(187)	249
Dividends on common stock	(346)	(324)
Other	(7)	(17)
Net cash from (used for) financing activities	7	(8)
Net Decrease in Cash and Cash Equivalents	(3)	(1)
Cash and Cash Equivalents at Beginning of Period	15	13
Cash and Cash Equivalents at End of Period	12	12
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	$ 152	$ 112