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Property, net
 12 Months Ended
Sep. 30, 2025
Property, Plant and Equipment [Abstract]  
Property, net Property, net
Property consists of (in millions):
 September 30,
 20252024
Land$5 $5 
Buildings and improvements490 464 
Machinery and equipment1,533 1,405 
Internal-use software636 586 
Construction in progress130 178 
Total2,794 2,638 
Less: Accumulated depreciation(1,997)(1,861)
Property, net$797 $777