Consolidated Statements of Cash Flows (Unaudited) - DTE Energy Company - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating Activities
Net Income Attributable to DTE Energy Company	$ 978	$ 818
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization	1,185	1,093
Nuclear fuel amortization	43	26
Allowance for equity funds used during construction	(26)	(20)
Deferred income taxes	119	15
Equity (earnings) losses of equity method investees	(7)	15
Dividends from equity method investees	3	4
Asset (gains) losses and impairments, net	(11)	(4)
Changes in assets and liabilities:
Accounts receivable, net	614	(150)
Inventories	(170)	(204)
Prepaid postretirement benefit costs	(45)	(60)
Accounts payable	(438)	228
Accrued pension liability	(59)	(71)
Accrued postretirement liability	1	(8)
Derivative assets and liabilities	(234)	77
Regulatory assets and liabilities	509	(552)
Other current and noncurrent assets and liabilities	(87)	205
Net cash from operating activities	2,375	1,412
Investing Activities
Plant and equipment expenditures — utility	(2,772)	(2,342)
Plant and equipment expenditures — non-utility	(41)	(55)
Proceeds from sale of nuclear decommissioning trust fund assets	527	707
Investment in nuclear decommissioning trust funds	(524)	(710)
Distributions from equity method investees	16	11
Contributions to equity method investees	(27)	(12)
Notes receivable	(56)	(13)
Other	(64)	(39)
Net cash used for investing activities	(2,941)	(2,453)
Financing Activities
Issuance of long-term debt, net of discount and issuance costs	2,278	1,771
Redemption of long-term debt	(1,146)	(316)
Short-term borrowings, net	55	236
Repurchase of common stock	0	(55)
Dividends paid on common stock	(564)	(514)
Other	(34)	(65)
Net cash from financing activities	589	1,057
Net Increase in Cash, Cash Equivalents, and Restricted Cash	23	16
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	43	35
Cash, Cash Equivalents, and Restricted Cash at End of Period	66	51
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	$ 401	$ 331