Consolidated Statements of Cash Flows - DTE Electric Company - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Activities
Net Income		$ 1,083	$ 907	$ 1,368
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization		1,468	1,377	1,292
Nuclear fuel amortization		42	58	37
Allowance for equity funds used during construction		(29)	(27)	(25)
Deferred income taxes		44	(32)	407
Asset (gains) losses and impairments, net		(5)	50	47
Changes in assets and liabilities:
Accounts receivable, net		(352)	(146)	111
Inventories		(98)	(153)	45
Accounts payable		109	308	0
Regulatory assets and liabilities		(766)	862	104
Other current and noncurrent assets and liabilities		323	(153)	260
Net cash from operating activities		1,977	3,067	3,697
Investing Activities
Proceeds from sale of assets		24	3	13
Proceeds from Sale and Maturity of Other Investments		879	1,047	2,350
Investment in nuclear decommissioning trust funds		(878)	(1,046)	(2,350)
Net cash used for investing activities		(3,431)	(3,863)	(4,070)
Financing Activities
Issuance of long-term debt, net of discount and issuance costs		2,171	4,457	3,692
Redemption of long-term debt		(1,587)	(3,522)	(882)
Dividends paid on common stock		(685)	(791)	(760)
Other		(82)	(84)	(83)
Net cash from financing activities		1,462	315	796
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash		8	(481)	423
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period		35	516	93
Cash, Cash Equivalents, and Restricted Cash at End of Period		43	35	516
Supplemental disclosure of cash information
Cash paid (received) for: Interest, net of interest capitalized		638	671	679
Cash paid (received) for: Income taxes	[1]	(3)	(3)	(360)
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable		435	353	266
DTE Electric
Operating Activities
Net Income		955	866	778
Adjustments to reconcile Net Income to Net cash from operating activities:
Depreciation and amortization		1,204	1,109	1,043
Nuclear fuel amortization		42	58	37
Allowance for equity funds used during construction		(26)	(25)	(23)
Deferred income taxes		25	122	89
Asset (gains) losses and impairments, net		8	1	41
Changes in assets and liabilities:
Accounts receivable, net		(40)	68	(42)
Inventories		(26)	(11)	(12)
Prepaid postretirement benefit costs — affiliates		57	(67)	(69)
Accounts payable		23	65	20
Accrued pension liability — affiliates		(18)	(326)	14
Accrued postretirement liability — affiliates		(65)	(44)	17
Regulatory assets and liabilities		(653)	716	55
Other current and noncurrent assets and liabilities		204	(216)	(43)
Net cash from operating activities		1,690	2,316	1,905
Investing Activities
Plant and equipment expenditures		(2,626)	(3,017)	(2,674)
Proceeds from sale of assets		4	0	0
Proceeds from Sale and Maturity of Other Investments		879	1,047	2,350
Investment in nuclear decommissioning trust funds		(878)	(1,046)	(2,350)
Notes receivable and other		(44)	(31)	(8)
Net cash used for investing activities		(2,665)	(3,047)	(2,682)
Financing Activities
Issuance of long-term debt, net of discount and issuance costs		1,118	985	1,683
Redemption of long-term debt		(337)	(321)	(632)
Capital contribution by parent company		600	555	636
Short-term borrowings, net — affiliate		(26)	(48)	4
Short-term borrowings, net — other		415	153	(354)
Dividends paid on common stock		(763)	(588)	(539)
Other		(17)	(12)	(17)
Net cash from financing activities		990	724	781
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash		15	(7)	4
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period		9	16	12
Cash, Cash Equivalents, and Restricted Cash at End of Period		24	9	16
Supplemental disclosure of cash information
Cash paid (received) for: Interest, net of interest capitalized		350	321	315
Cash paid (received) for: Income taxes		(33)	5	14
Supplemental disclosure of non-cash investing and financing activities
Plant and equipment expenditures in accounts payable		$ 335	$ 286	$ 174

[1] 2020 cash received primarily relates to AMT credit and other refunds, of which a portion was accelerated due to the CARES Act