Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating Activities
Net Income	$ 832	$ 710
Net Income	847	737
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization	756	702
Nuclear fuel amortization	39	44
Allowance for equity funds used during construction	(17)	(15)
Deferred income taxes	261	244
Equity earnings of equity method investees	(77)	(49)
Dividends from equity method investees	55	52
Asset (gains) losses and impairments, net	5	0
Changes in assets and liabilities:
Accounts receivable, net	43	6
Inventories	(41)	10
Accounts payable	25	39
Accrued pension liability	(230)	(1)
Accrued postretirement liability	(30)	(80)
Derivative assets and liabilities	(133)	122
Regulatory assets and liabilities	260	93
Other current and noncurrent assets and liabilities	(198)	(110)
Net cash from operating activities	1,550	1,767
Investing Activities
Plant and equipment expenditures — utility	(1,439)	(1,267)
Plant and equipment expenditures — non-utility	(133)	(75)
Proceeds from sale of nuclear decommissioning trust fund assets	951	1,135
Investment in nuclear decommissioning trust funds	(936)	(1,140)
Distributions from equity method investees	10	8
Contributions to equity method investees	(194)	(199)
Other	(63)	35
Net cash used for investing activities	(1,804)	(1,503)
Financing Activities
Issuance of long-term debt, net of issuance costs	1,010	646
Redemption of long-term debt	(385)	(322)
Repurchase of long-term debt	0	(59)
Short-term borrowings, net	160	(89)
Repurchase of common stock	(51)	(33)
Dividends on common stock	(444)	(393)
Other	(65)	15
Net cash from (used for) financing activities	225	(235)
Net Increase (Decrease) in Cash and Cash Equivalents	(29)	29
Cash and Cash Equivalents at Beginning of Period	92	37
Cash and Cash Equivalents at End of Period	63	66
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	222	168
DTE Electric
Operating Activities
Net Income	463	547
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization	549	539
Nuclear fuel amortization	39	44
Allowance for equity funds used during construction	(14)	(13)
Deferred income taxes	248	298
Equity earnings of equity method investees	(1)	(1)
Changes in assets and liabilities:
Accounts receivable, net	(104)	(135)
Inventories	32	18
Accounts payable	32	59
Accrued pension liability — affiliates	(182)	9
Accrued postretirement liability — affiliates	(17)	(52)
Regulatory assets and liabilities	223	100
Other current and noncurrent assets and liabilities	(174)	(119)
Net cash from operating activities	1,095	1,295
Investing Activities
Plant and equipment expenditures	(1,103)	(999)
Notes receivable, including affiliates	5
Notes receivable, including affiliates		(64)
Proceeds from sale of nuclear decommissioning trust fund assets	951	1,135
Investment in nuclear decommissioning trust funds	(936)	(1,140)
Other	(5)	40
Net cash used for investing activities	(1,088)	(1,028)
Financing Activities
Issuance of long-term debt, net of issuance costs	435	355
Redemption of long-term debt	(300)	(10)
Repurchase of long-term debt	0	(59)
Short-term borrowings, net — affiliate	(51)	37
Short-term borrowings, net — other	249	(272)
Dividends on common stock	(324)	(315)
Other	(17)	(2)
Net cash from (used for) financing activities	(8)	(266)
Net Increase (Decrease) in Cash and Cash Equivalents	(1)	1
Cash and Cash Equivalents at Beginning of Period	13	15
Cash and Cash Equivalents at End of Period	12	16
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	$ 112	$ 118