v3.26.1
ACQUISITIONS - Other Acquisitions (Details) - USD ($)
$ in Millions
 9 Months Ended 12 Months Ended
Jun. 27, 2026
Jun. 28, 2025
Sep. 30, 2025
Business Combination [Line Items]      
Payment to acquire business $ 3,159 $ 239  
Goodwill $ 12,166   $ 10,612
Minimum      
Business Combination [Line Items]      
Air transportation equipment estimated useful Life 25 years    
Maximum      
Business Combination [Line Items]      
Air transportation equipment estimated useful Life 30 years    
Other Acquisitions      
Business Combination [Line Items]      
Payment to acquire business $ 257   284
Amount of goodwill expected to be tax deductible 79   147
Goodwill 111   147
Business acquisition, intangible assets, expected tax deductible amount 70   90
Other intangible assets $ 93   $ 90
Goodwill and intangible assets, deductible for tax purposes, term 15 years   15 years