v3.26.3
ACQUISITIONS - Simmonds Precision Products, Inc. (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 06, 2025
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2024
Business Combination [Line Items]        
Acquisition of businesses, net of cash acquired   $ 4,389 $ 419 $ 2,347
GOODWILL   $ 12,946 $ 10,612 $ 10,419
Technology | Maximum        
Business Combination [Line Items]        
Amortization Period (in years)   20 years    
Customer Relationships | Maximum        
Business Combination [Line Items]        
Amortization Period (in years)   20 years    
Simmonds Precision Products, Inc.        
Business Combination [Line Items]        
Acquisition of businesses, net of cash acquired $ 757      
GOODWILL 370      
Amount of goodwill expected to be tax deductible 370      
Other intangible assets 425      
Business acquisition, intangible assets, expected tax deductible amount $ 425      
Goodwill and Intangible Assets, Deductible For Tax Purposes, Term 15 years      
Simmonds Precision Products, Inc. | Technology-Based Intangible Assets        
Business Combination [Line Items]        
Other intangible assets $ 219      
Simmonds Precision Products, Inc. | Customer Relationships        
Business Combination [Line Items]        
Other intangible assets 160      
Simmonds Precision Products, Inc. | Trademarks and trade names        
Business Combination [Line Items]        
Other intangible assets $ 46