v3.26.3
Product Warranty Obligations
12 Months Ended
Sep. 30, 2026
Product Warranties Disclosures [Abstract]  
Product Warranty Obligations Product Warranty Obligations
We record a liability for product warranty obligations at the time of sale to a customer based upon historical warranty experience. Most of our products are covered under a warranty period that runs for twelve months from either the date of sale or installation. We also record a liability for specific warranty matters when they become known and reasonably estimable.
Changes in product warranty obligations were (in millions):
September 30,
20262025
Beginning balance$23 $24 
Warranties recorded at time of sale14 20 
Adjustments to pre-existing warranties4 (2)
Settlements of warranty claims(20)(19)
Ending balance$21 $23