v3.25.2
Restructuring and Related Costs - Schedule of Restructuring Reserve by Type of Cost (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]        
Restructuring and related costs $ 51 $ 103 $ 146 $ 377
Current Restructuring Plans        
Restructuring Cost and Reserve [Line Items]        
Restructuring and related costs     122  
Utilized—cash     (84)  
Other     3  
Balance at June 30, 2025 41   41  
Employee Severance and Termination Benefits | Current Restructuring Plans        
Restructuring Cost and Reserve [Line Items]        
Restructuring and related costs     74  
Utilized—cash     (44)  
Other     0  
Balance at June 30, 2025 30   30  
Long-Lived Asset Impairments | Current Restructuring Plans        
Restructuring Cost and Reserve [Line Items]        
Restructuring and related costs     27  
Utilized—cash     (27)  
Other     0  
Balance at June 30, 2025 0   0  
Other | Current Restructuring Plans        
Restructuring Cost and Reserve [Line Items]        
Restructuring and related costs     21  
Utilized—cash     (13)  
Other     3  
Balance at June 30, 2025 $ 11   $ 11