XML 89 R65.htm IDEA: XBRL DOCUMENT v3.25.4
Organization and Basis of Presentation (Details Textuals)
customer in Millions, $ in Millions
Dec. 31, 2025
USD ($)
customer
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Variable Interest Entity [Line Items]      
Number of electric utility customers | customer 2.3    
Number of gas utility customers | customer 1.4    
Material potential exposure $ 0    
Investments in equity method investees 122 $ 128 $ 166
Amount in excess of carrying amount 96 94  
Variable interest entity, nonconsolidated      
Variable Interest Entity [Line Items]      
Investments in equity method investees 63 $ 65  
DTE Electric      
Variable Interest Entity [Line Items]      
Material potential exposure $ 0