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Other (Expense) Income
 12 Months Ended
Sep. 30, 2025
Other Income and Expenses [Abstract]  
Other (Expense) Income Other (Expense) Income
The components of Other (expense) income were (in millions):
202520242023
Interest income$13 $15 $10 
Royalty income12 11 13 
Net legacy asbestos and environmental charges(154)(21)(18)
Non-operating pension and postretirement benefit credit (cost)(1)20 (83)
Fair value adjustments for earnout payments (Note 4)7 31 — 
Other— 6 7 
Other (expense) income$(123)$62 $(71)
In the fourth quarter of 2025, we elected to change our method of accounting for net legacy asbestos-related defense costs from expensing as incurred to accruing for all future defense costs. See Notes 1 and 17 for further information on this change.