Consolidated Statements of Cash Flows (Unaudited) - DTE Energy Company - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Activities
Net Income	$ 445	$ 394
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization	385	358
Nuclear fuel amortization	16	3
Allowance for equity funds used during construction	(9)	(8)
Deferred income taxes	52	18
Equity (earnings) losses of equity method investees	(4)	11
Dividends from equity method investees	1	1
Asset (gains) losses and impairments, net	(1)	0
Changes in assets and liabilities:
Accounts receivable, net	486	18
Inventories	133	129
Prepaid postretirement benefit costs	(22)	(27)
Accounts payable	(419)	(42)
Gas inventory equalization	100	108
Accrued pension liability	(32)	(25)
Accrued postretirement liability	(8)	(8)
Derivative assets and liabilities	(178)	108
Regulatory assets and liabilities	159	(154)
Other current and noncurrent assets and liabilities	(180)	(76)
Net cash from operating activities	924	808
Investing Activities
Plant and equipment expenditures — utility	(924)	(737)
Plant and equipment expenditures — non-utility	(13)	(27)
Proceeds from sale of nuclear decommissioning trust fund assets	166	207
Investment in nuclear decommissioning trust funds	(168)	(209)
Distributions from equity method investees	4	2
Contributions to equity method investees	(10)	(1)
Notes receivable	14
Notes receivable		(8)
Other	(50)	(9)
Net cash used for investing activities	(981)	(782)
Financing Activities
Issuance of long-term debt, net of discount and issuance costs	1,386	1,119
Redemption of long-term debt	0	(250)
Short-term borrowings, net	(1,032)	(514)
Repurchase of common stock	0	(55)
Dividends paid on common stock	(188)	(171)
Other	(15)	(34)
Net cash from financing activities	151	95
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash	94	121
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	43	35
Cash, Cash Equivalents, and Restricted Cash at End of Period	137	156
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable	$ 333	$ 300