Consolidated Statements of Cash Flows (Unaudited) - DTE Energy Company - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Operating Activities
Net Income	$ 445	$ 313
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization	452	423
Nuclear fuel amortization	17	12
Allowance for equity funds used during construction	(24)	(18)
Deferred income taxes	(19)	23
Equity (earnings) losses of equity method investees	(7)	8
Dividends from equity method investees	1	0
Asset (gains) losses and impairments, net	(1)	(1)
Changes in assets and liabilities:
Accounts receivable, net	(61)	172
Inventories	90	7
Prepaid postretirement benefit costs	(27)	(20)
Accounts payable	(2)	(179)
Gas inventory equalization	121	90
Accrued pension liability	(10)	(22)
Accrued postretirement liability	(7)	(7)
Derivative assets and liabilities	54	94
Regulatory assets and liabilities	78	146
Other current and noncurrent assets and liabilities	(80)	1
Net cash from operating activities	1,020	1,042
Investing Activities
Plant and equipment expenditures — utility	(857)	(1,039)
Plant and equipment expenditures — non-utility	(16)	(12)
Proceeds from sale of nuclear decommissioning trust fund assets	139	108
Investment in nuclear decommissioning trust funds	(142)	(110)
Distributions from equity method investees	3	3
Contributions to equity method investees	0	(3)
Notes receivable	(82)	(356)
Investment in time deposits	0	(200)
Other	(13)	(7)
Net cash used for investing activities	(968)	(1,616)
Financing Activities
Issuance of long-term debt, net of discount and issuance costs	1,093	2,181
Redemption of long-term debt	(365)	(100)
Short-term borrowings, net	(554)	(993)
Dividends paid on common stock	(217)	(202)
Other	(7)	(14)
Net cash from (used for) financing activities	(50)	872
Net Increase in Cash, Cash Equivalents, and Restricted Cash	2	298
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	88	51
Cash, Cash Equivalents, and Restricted Cash at End of Period	90	349
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	$ 375	$ 398