v3.26.1
Restructuring Activities - Summary of Amount of Restructuring Severance Expense Related to Programs (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Restructuring Cost and Reserve [Line Items]        
Severance expense (income) $ 1 [1] $ 4 [1] $ 4 [2] $ 13 [2]
Utilization (cash paid) (2) (4) (8) (18)
2025 Restructuring Program        
Restructuring Cost and Reserve [Line Items]        
Severance expense (income) 1 [1] 4 [1] 3 [2] 15 [2]
Utilization (cash paid) (2) (2) (6) (7)
2023 Restructuring Program        
Restructuring Cost and Reserve [Line Items]        
Severance expense (income) 0 [1] 0 [1] 1 [2] (2) [2]
Utilization (cash paid) $ 0 $ (2) $ (2) $ (11)
[1] Severance expense is recorded within the selling, general and administrative expense caption of the Statements of Condensed Consolidated Comprehensive Income (Loss) for the three months ended June 30, 2026 and 2025.
[2] Severance expense (income) is recorded within the selling, general and administrative expense caption of the Statements of Condensed Consolidated Comprehensive Income (Loss) for the nine months ended June 30, 2026 and 2025.