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, 2024		207,172,000			138,632,000
Beginning Balance at Dec. 31, 2024				$ 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		207,172,000			138,632,000
Beginning Balance at Dec. 31, 2024				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		207,683,000			138,632,000
Ending Balance at Sep. 30, 2025				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		207,683,000			138,632,000
Ending Balance at Sep. 30, 2025				$ 11,463	$ 1,386	6,609	3,468
Beginning Balance (in shares) at Dec. 31, 2025	207,745,154	207,745,000		138,632,324	138,632,000
Beginning Balance at Dec. 31, 2025	$ 12,303			$ 12,414	$ 1,386	7,563	3,465
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	247		247	215			215
Dividends declared on common stock	$ (242)		(242)	(235)			(235)
Ending Balance (in shares) at Mar. 31, 2026		208,028,000			138,632,000
Ending Balance at Mar. 31, 2026				$ 12,394	$ 1,386	7,563	3,445
Beginning Balance (in shares) at Dec. 31, 2025	207,745,154	207,745,000		138,632,324	138,632,000
Beginning Balance at Dec. 31, 2025	$ 12,303			$ 12,414	$ 1,386	7,563	3,465
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	$ 999			$ 950
Ending Balance (in shares) at Sep. 30, 2026	208,163,081	208,163,000		138,632,324	138,632,000
Ending Balance at Sep. 30, 2026	$ 12,666			$ 12,661	$ 1,386	7,563	3,712
Beginning Balance (in shares) at Mar. 31, 2026		208,028,000			138,632,000
Beginning Balance at Mar. 31, 2026				12,394	$ 1,386	7,563	3,445
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	282		282	266			266
Dividends declared on common stock	(485)		(485)	(234)			(234)
Ending Balance (in shares) at Jun. 30, 2026		208,088,000			138,632,000
Ending Balance at Jun. 30, 2026				12,426	$ 1,386	7,563	3,477
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	$ 470		$ 470	469			469
Dividends declared on common stock				$ (234)			(234)
Ending Balance (in shares) at Sep. 30, 2026	208,163,081	208,163,000		138,632,324	138,632,000
Ending Balance at Sep. 30, 2026	$ 12,666			$ 12,661	$ 1,386	$ 7,563	$ 3,712