Consolidated Statements of Changes in Shareholder's Equity (Unaudited) - DTE Electric Company - USD ($) $ in Millions	Total	Common Stock	Retained Earnings	DTE Electric	DTE Electric Common Stock	DTE Electric Additional Paid-in Capital	DTE Electric Retained Earnings
Beginning Balance (in shares) at Dec. 31, 2023		206,357,000			138,632,000
Beginning Balance at Dec. 31, 2023				$ 10,224	$ 1,386	$ 5,975	$ 2,863
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	$ 313		$ 313	170			170
Dividends declared on common stock	(211)		(211)	(194)			(194)
Ending Balance (in shares) at Mar. 31, 2024		206,937,000			138,632,000
Ending Balance at Mar. 31, 2024				10,200	$ 1,386	5,975	2,839
Beginning Balance (in shares) at Dec. 31, 2023		206,357,000			138,632,000
Beginning Balance at Dec. 31, 2023				10,224	$ 1,386	5,975	2,863
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,112			886
Ending Balance (in shares) at Sep. 30, 2024		207,101,000			138,632,000
Ending Balance at Sep. 30, 2024				10,528	$ 1,386	5,975	3,167
Beginning Balance (in shares) at Mar. 31, 2024		206,937,000			138,632,000
Beginning Balance at Mar. 31, 2024				10,200	$ 1,386	5,975	2,839
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	322		322	278			278
Dividends declared on common stock	(422)		(422)	(194)			(194)
Ending Balance (in shares) at Jun. 30, 2024		207,020,000			138,632,000
Ending Balance at Jun. 30, 2024				10,284	$ 1,386	5,975	2,923
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	$ 477		477	438			438
Dividends declared on common stock				(194)			(194)
Ending Balance (in shares) at Sep. 30, 2024		207,101,000			138,632,000
Ending Balance at Sep. 30, 2024				$ 10,528	$ 1,386	5,975	3,167
Beginning Balance (in shares) at Dec. 31, 2024	207,171,582	207,172,000		138,632,324	138,632,000
Beginning Balance at Dec. 31, 2024	$ 11,699			$ 11,154	$ 1,386	6,609	3,159
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	445		445	121			121
Dividends declared on common stock	$ (226)		(226)	(211)			(211)
Ending Balance (in shares) at Mar. 31, 2025		207,516,000			138,632,000
Ending Balance at Mar. 31, 2025				$ 11,064	$ 1,386	6,609	3,069
Beginning Balance (in shares) at Dec. 31, 2024	207,171,582	207,172,000		138,632,324	138,632,000
Beginning Balance at Dec. 31, 2024	$ 11,699			$ 11,154	$ 1,386	6,609	3,159
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	$ 1,093			$ 944
Ending Balance (in shares) at Sep. 30, 2025	207,683,012	207,683,000		138,632,324	138,632,000
Ending Balance at Sep. 30, 2025	$ 12,158			$ 11,463	$ 1,386	6,609	3,468
Beginning Balance (in shares) at Mar. 31, 2025		207,516,000			138,632,000
Beginning Balance at Mar. 31, 2025				11,064	$ 1,386	6,609	3,069
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	229		229	318			318
Dividends declared on common stock	(453)		(453)	(212)			(212)
Ending Balance (in shares) at Jun. 30, 2025		207,588,000			138,632,000
Ending Balance at Jun. 30, 2025				11,170	$ 1,386	6,609	3,175
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	$ 419		$ 419	505			505
Dividends declared on common stock				$ (212)			(212)
Ending Balance (in shares) at Sep. 30, 2025	207,683,012	207,683,000		138,632,324	138,632,000
Ending Balance at Sep. 30, 2025	$ 12,158			$ 11,463	$ 1,386	$ 6,609	$ 3,468