v3.26.1
Dispositions (Details)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2025
USD ($)
Jun. 30, 2026
USD ($)
Mar. 31, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Apr. 30, 2026
USD ($)
transmission_mile
substation
Business Combination [Line Items]              
Net loss (gain) on disposals of businesses   $ (7)   $ (54) $ (42) $ (54)  
Sale              
Business Combination [Line Items]              
Cash proceeds   145     145    
Net loss (gain) on disposals of businesses   (7)     (42)    
Sale | Electric Utility              
Business Combination [Line Items]              
Cash proceeds             $ 470
Number of transmission and distribution lines miles | transmission_mile             2,700
Number of substations | substation             14
Sale | LPG Distribution Businesses              
Business Combination [Line Items]              
Net loss (gain) on disposals of businesses   $ (7) $ (64)   (71)    
Sale | LPG Business, Romania              
Business Combination [Line Items]              
Net loss (gain) on disposals of businesses         (2)    
Sale | LPG Distribution Business, Flaga              
Business Combination [Line Items]              
Net loss (gain) on disposals of businesses         $ 29    
Sale | Cylinder Business              
Business Combination [Line Items]              
Net loss (gain) on disposals of businesses $ 2