v3.26.3
Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Goodwill [Roll Forward]    
Gross carrying value of Goodwill, beginning balance $ 4,158.0 $ 4,151.0
Accumulated impairment, beginning balance (319.0) (158.0)
Goodwill, beginning balance 3,839.0 3,993.0
Impairment   (161.0)
Translation (22.0) 7.0
Gross carrying value of Goodwill, ending balance 4,136.0 4,158.0
Accumulated impairment, ending balance (319.0) (319.0)
Goodwill, ending balance 3,817.0 3,839.0
Intelligent Devices    
Goodwill [Roll Forward]    
Gross carrying value of Goodwill, beginning balance 904.0 900.0
Accumulated impairment, beginning balance 0.0 0.0
Goodwill, beginning balance 904.0 900.0
Impairment   0.0
Translation (10.0) 4.0
Gross carrying value of Goodwill, ending balance 894.0 904.0
Accumulated impairment, ending balance 0.0 0.0
Goodwill, ending balance 894.0 904.0
Software & Control    
Goodwill [Roll Forward]    
Gross carrying value of Goodwill, beginning balance 2,440.0 2,437.0
Accumulated impairment, beginning balance 0.0 0.0
Goodwill, beginning balance 2,440.0 2,437.0
Impairment   0.0
Translation (8.0) 3.0
Gross carrying value of Goodwill, ending balance 2,432.0 2,440.0
Accumulated impairment, ending balance 0.0 0.0
Goodwill, ending balance 2,432.0 2,440.0
Lifecycle Services    
Goodwill [Roll Forward]    
Gross carrying value of Goodwill, beginning balance 814.0 814.0
Accumulated impairment, beginning balance (319.0) (158.0)
Goodwill, beginning balance 495.0 656.0
Impairment   (161.0)
Translation (4.0) 0.0
Gross carrying value of Goodwill, ending balance 810.0 814.0
Accumulated impairment, ending balance (319.0) (319.0)
Goodwill, ending balance $ 491.0 $ 495.0