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Other Income
 3 Months Ended
Dec. 31, 2023
Other Income and Expenses [Abstract]  
Other Income Other Income
The components of Other income were (in millions):
Three Months Ended
December 31,
20232022
Interest income$5.0 $1.3 
Royalty income2.8 2.5 
Legacy product liability and environmental charges(5.0)(2.8)
Non-operating pension and postretirement benefit credit4.9 12.4 
Other1.2 3.9 
Other income$8.9 $17.3