v3.26.1
Segment Information - Schedule of Other Reconciling Items (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Sep. 30, 2025
Segment Reporting [Line Items]          
Total Assets $ 8,959 $ 8,836 $ 8,959 $ 8,836 $ 8,954
Investment in partially-owned affiliates     276 294  
Equity income 20 17 60 60  
Depreciation 74 71 211 207  
Amortization 12 12 35 35  
Capital Expenditures 67 57 205 166  
Restructuring charges 5 9 33 42  
Affilliates          
Segment Reporting [Line Items]          
Equity income       1  
Restructuring charges   6 3 7  
Operating Segments | Americas          
Segment Reporting [Line Items]          
Total Assets 2,963 2,778 2,963 2,778  
Investment in partially-owned affiliates     2 3  
Equity income 0 0 0 0  
Depreciation 33 33 91 94  
Amortization 0 3 3 9  
Capital Expenditures 28 18 91 60  
Operating Segments | EMEA          
Segment Reporting [Line Items]          
Total Assets 1,969 2,140 1,969 2,140  
Investment in partially-owned affiliates     44 40  
Equity income 5 5 14 13  
Depreciation 30 26 83 79  
Amortization 0 0 0 0  
Capital Expenditures 26 28 75 75  
Operating Segments | Asia          
Segment Reporting [Line Items]          
Total Assets 3,085 3,039 3,085 3,039  
Investment in partially-owned affiliates     230 251  
Equity income 15 18 49 50  
Depreciation 11 12 37 34  
Amortization 12 9 32 26  
Capital Expenditures 13 11 39 31  
Reconciling Items          
Segment Reporting [Line Items]          
Total Assets 942 879 942 879  
Investment in partially-owned affiliates     0 0  
Equity income 0 (6) (3) (3)  
Depreciation 0 0 0 0  
Amortization 0 0 0 0  
Capital Expenditures $ 0 $ 0 $ 0 0  
Reconciling Items | Asia | China          
Segment Reporting [Line Items]          
Equity income       $ 4