v3.26.1
SUPPLEMENTAL FINANCIAL INFORMATION - Restructuring Activity (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Restructuring Reserve [Roll Forward]      
Beginning balance $ 189 $ 166  
Cost incurred 1,230 1,114 $ 659
Cost paid/settled (1,084) (1,090)  
Ending balance 336 189 166
Separation Costs      
Restructuring Reserve [Roll Forward]      
Beginning balance 120 133  
Cost incurred 608 145  
Cost paid/settled (500) (158)  
Ending balance 229 120 133
Asset-Related Costs      
Restructuring Reserve [Roll Forward]      
Beginning balance 0 0  
Cost incurred 231 55  
Cost paid/settled (231) (55)  
Ending balance 0 0 0
Other Costs      
Restructuring Reserve [Roll Forward]      
Beginning balance 69 32  
Cost incurred 391 914  
Cost paid/settled (353) (877)  
Ending balance $ 107 $ 69 $ 32