Consolidated Statements of Changes in Equity (Unaudited) - DTE Energy Company - USD ($) $ in Millions	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Beginning Balance (in shares) at Dec. 31, 2024		207,172,000
Beginning Balance at Dec. 31, 2024	$ 11,704	$ 6,779	$ 4,946	$ (26)	$ 5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	445		445
Dividends declared on common stock	(226)		(226)
Issuance of common stock (in shares)		73,000
Issuance of common stock	9	$ 9
Other comprehensive income (loss), net of tax	(2)			(2)
Stock-based compensation and other (in shares)		271,000
Stock-based compensation and other	(3)	$ (2)	(2)		1
Ending Balance (in shares) at Mar. 31, 2025		207,516,000
Ending Balance at Mar. 31, 2025	11,927	$ 6,786	5,163	(28)	6
Beginning Balance (in shares) at Dec. 31, 2024		207,172,000
Beginning Balance at Dec. 31, 2024	11,704	$ 6,779	4,946	(26)	5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,093
Ending Balance (in shares) at Sep. 30, 2025		207,683,000
Ending Balance at Sep. 30, 2025	12,163	$ 6,835	5,357	(34)	5
Beginning Balance (in shares) at Mar. 31, 2025		207,516,000
Beginning Balance at Mar. 31, 2025	11,927	$ 6,786	5,163	(28)	6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	229		229
Dividends declared on common stock	(453)		(453)
Issuance of common stock (in shares)		67,000
Issuance of common stock	8	$ 8
Other comprehensive income (loss), net of tax	1			1
Stock-based compensation and other (in shares)		5,000
Stock-based compensation and other	15	$ 15	1		(1)
Ending Balance (in shares) at Jun. 30, 2025		207,588,000
Ending Balance at Jun. 30, 2025	11,727	$ 6,809	4,940	(27)	5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	419		419
Issuance of common stock (in shares)		64,000
Issuance of common stock	9	$ 9
Other comprehensive income (loss), net of tax	(7)			(7)
Stock-based compensation and other (in shares)		31,000
Stock-based compensation and other	15	$ 17	(2)
Ending Balance (in shares) at Sep. 30, 2025		207,683,000
Ending Balance at Sep. 30, 2025	$ 12,163	$ 6,835	5,357	(34)	5
Beginning Balance (in shares) at Dec. 31, 2025	207,745,154	207,745,000
Beginning Balance at Dec. 31, 2025	$ 12,308	$ 6,858	5,484	(39)	5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	247		247
Dividends declared on common stock	(242)		(242)
Issuance of common stock (in shares)		66,000
Issuance of common stock	9	$ 9
Other comprehensive income (loss), net of tax	3			3
Stock-based compensation and other (in shares)		217,000
Stock-based compensation and other	3	$ 5	(2)		0
Ending Balance (in shares) at Mar. 31, 2026		208,028,000
Ending Balance at Mar. 31, 2026	$ 12,328	$ 6,872	5,487	(36)	5
Beginning Balance (in shares) at Dec. 31, 2025	207,745,154	207,745,000
Beginning Balance at Dec. 31, 2025	$ 12,308	$ 6,858	5,484	(39)	5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	$ 999
Ending Balance (in shares) at Sep. 30, 2026	208,163,081	208,163,000
Ending Balance at Sep. 30, 2026	$ 12,671	$ 6,924	5,752	(10)	5
Beginning Balance (in shares) at Mar. 31, 2026		208,028,000
Beginning Balance at Mar. 31, 2026	12,328	$ 6,872	5,487	(36)	5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	282		282
Dividends declared on common stock	(485)		(485)
Issuance of common stock (in shares)		62,000
Issuance of common stock	10	$ 10
Other comprehensive income (loss), net of tax	4			4
Stock-based compensation and other (in shares)		(2,000)
Stock-based compensation and other	15	$ 16	(1)		0
Ending Balance (in shares) at Jun. 30, 2026		208,088,000
Ending Balance at Jun. 30, 2026	12,154	$ 6,898	5,283	(32)	5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	470		470
Issuance of common stock (in shares)		60,000
Issuance of common stock	9	$ 9
Other comprehensive income (loss), net of tax	22			22
Stock-based compensation and other (in shares)		15,000
Stock-based compensation and other	$ 16	$ 17	(1)
Ending Balance (in shares) at Sep. 30, 2026	208,163,081	208,163,000
Ending Balance at Sep. 30, 2026	$ 12,671	$ 6,924	$ 5,752	$ (10)	$ 5