v3.26.3
Basis of Presentation and Accounting Policies - Dissolution of Sensia (Details) - USD ($)
12 Months Ended
Apr. 01, 2026
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2024
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Gross carrying value of Goodwill     $ 161,000,000  
Impairment of intangible assets   $ 0 224,000,000 $ 0
Goodwill   3,817,000,000 3,839,000,000 3,993,000,000
Pre-tax gain on the dissolution   15,000,000 0 $ 0
Transaction costs   $ 11,000,000    
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Sensia Joint Venture        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Proceeds from sale of businesses $ 40,000,000      
Derecognized net assets 94,000,000      
Cash and cash equivalents 47,000,000      
Receivable 60,000,000      
Inventory 54,000,000      
Other intangible assets 56,000,000      
Short term debt 89,000,000      
Contract liabilities 20,000,000      
Pre-tax gain on the dissolution $ 15,000,000      
Sensia        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Gross carrying value of Goodwill     161,000,000  
Impairment of intangible assets     $ 63,000,000  
Goodwill, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]     Goodwill  
Goodwill     $ 0  
Intangible assets     $ 58,000,000