Consolidated Statements of Cash Flows (Unaudited) - DTE Energy Company - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities
Net Income	$ 313	$ 445
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization	423	385
Nuclear fuel amortization	12	16
Allowance for equity funds used during construction	(18)	(9)
Deferred income taxes	23	52
Equity (earnings) losses of equity method investees	8	(4)
Dividends from equity method investees	0	1
Asset (gains) losses and impairments, net	(1)	(1)
Changes in assets and liabilities:
Accounts receivable, net	172	486
Inventories	7	133
Prepaid postretirement benefit costs	(20)	(22)
Accounts payable	(179)	(419)
Gas inventory equalization	90	100
Accrued pension liability	(22)	(32)
Accrued postretirement liability	(7)	(8)
Derivative assets and liabilities	94	(178)
Regulatory assets and liabilities	146	159
Other current and noncurrent assets and liabilities	1	(180)
Net cash from operating activities	1,042	924
Investing Activities
Plant and equipment expenditures — utility	(1,039)	(924)
Plant and equipment expenditures — non-utility	(12)	(13)
Proceeds from sale of nuclear decommissioning trust fund assets	108	166
Investment in nuclear decommissioning trust funds	(110)	(168)
Distributions from equity method investees	3	4
Contributions to equity method investees	(3)	(10)
Notes receivable	(356)
Investment in time deposit	(200)	0
Notes receivable		14
Other	(7)	(50)
Net cash used for investing activities	(1,616)	(981)
Financing Activities
Issuance of long-term debt, net of discount and issuance costs	2,181	1,386
Redemption of long-term debt	(100)	0
Short-term borrowings, net	(993)	(1,032)
Dividends paid on common stock	(202)	(188)
Other	(14)	(15)
Net cash from financing activities	872	151
Net Increase in Cash, Cash Equivalents, and Restricted Cash	298	94
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	51	43
Cash, Cash Equivalents, and Restricted Cash at End of Period	349	137
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	$ 398	$ 333