v3.26.1
THE DTE ENERGY COMPANY MASTER PLAN TRUST - Investments Measured at Fair Value (Details) - EBP Plans - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) $ 4,008,616 $ 3,573,248
Registered investment companies and other equities    
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) 385,424 342,446
DTE Energy common stock    
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) 583,339 571,040
Common/collective trusts    
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) 3,039,853 2,659,762
Level 1    
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) 968,763 913,486
Level 1 | Registered investment companies and other equities    
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) 385,424 342,446
Level 1 | DTE Energy common stock    
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) 583,339 571,040
Level 1 | Common/collective trusts    
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) 0 0
Other    
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) 3,039,853 2,659,762
Other | Registered investment companies and other equities    
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) 0 0
Other | DTE Energy common stock    
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) 0 0
Other | Common/collective trusts    
EBP, Master Trust [Line Items]    
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4) $ 3,039,853 $ 2,659,762