Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities
Net Income	$ 569	$ 385
Net Income	577	399
Adjustments to reconcile Net Income to net cash from operating activities:
Depreciation and amortization	498	472
Nuclear fuel amortization	24	29
Allowance for equity funds used during construction	(12)	(10)
Deferred income taxes	164	134
Equity earnings of equity method investees	(51)	(35)
Dividends from equity method investees	37	33
Asset (gains) losses and impairments, net	3	0
Changes in assets and liabilities:
Accounts receivable, net	49	81
Inventories	32	86
Accounts payable	23	(10)
Gas inventory equalization	35	46
Accrued pension liability	(133)	3
Accrued postretirement liability	0	(53)
Derivative assets and liabilities	(123)	93
Regulatory assets and liabilities	216	71
Other current and noncurrent assets and liabilities	(148)	(49)
Net cash from operating activities	1,183	1,276
Investing Activities
Plant and equipment expenditures — utility	(968)	(797)
Plant and equipment expenditures — non-utility	(68)	(64)
Proceeds from sale of nuclear decommissioning trust fund assets	705	741
Investment in nuclear decommissioning trust funds	(688)	(744)
Distributions from equity method investees	7	7
Contributions to equity method investees	(175)	(121)
Other	(62)	40
Net cash used for investing activities	(1,249)	(938)
Financing Activities
Issuance of long-term debt, net of issuance costs	495	588
Redemption of long-term debt	(6)	(313)
Short-term borrowings, net	(79)	(324)
Repurchase of common stock	(51)	(33)
Dividends on common stock	(296)	(262)
Other	(27)	1
Net cash from (used for) financing activities	36	(343)
Net Decrease in Cash and Cash Equivalents	(30)	(5)
Cash and Cash Equivalents at Beginning of Period	92	37
Cash and Cash Equivalents at End of Period	62	32
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	218	154
DTE Electric
Operating Activities
Net Income	244	262
Adjustments to reconcile Net Income to net cash from operating activities:
Depreciation and amortization	361	363
Nuclear fuel amortization	24	29
Allowance for equity funds used during construction	(10)	(9)
Deferred income taxes	130	146
Equity earnings of equity method investees	(1)	(1)
Changes in assets and liabilities:
Accounts receivable, net	(36)	(32)
Inventories	23	25
Accounts payable	(4)	32
Accrued pension liability — affiliates	(122)	5
Accrued postretirement liability — affiliates	2	(34)
Regulatory assets and liabilities	193	82
Other current and noncurrent assets and liabilities	(91)	(44)
Net cash from operating activities	714	825
Investing Activities
Plant and equipment expenditures	(737)	(640)
Proceeds from sale of assets	0	6
Notes receivable, including affiliates	5
Notes receivable, including affiliates		(62)
Proceeds from sale of nuclear decommissioning trust fund assets	705	741
Investment in nuclear decommissioning trust funds	(688)	(744)
Other	(5)	36
Net cash used for investing activities	(720)	(663)
Financing Activities
Issuance of long-term debt, net of issuance costs	0	297
Redemption of long-term debt	0	(10)
Short-term borrowings, net — affiliate	(39)	33
Short-term borrowings, net — other	264	(272)
Dividends on common stock	(216)	(210)
Other	(7)	(2)
Net cash from (used for) financing activities	2	(164)
Net Decrease in Cash and Cash Equivalents	(4)	(2)
Cash and Cash Equivalents at Beginning of Period	13	15
Cash and Cash Equivalents at End of Period	9	13
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	$ 133	$ 112