XML 142 R109.htm IDEA: XBRL DOCUMENT v3.10.0.1
Commitments And Contingencies (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Commitments And Contingencies [Abstract]    
Estimated costs associated with environmental remediation activities $ 4.1 $ 4.4
Product liability accruals 8.2 5.3
Product warranty accruals 6.9 6.4
Pet safety recall 18.9 35.8
Inventory write-offs associated with product safety recall 4.1 15.0
Customer losses, returned or disposed product 2.0 7.1
Incremental costs to dispose of product and operational expenses $ 12.9 13.7
Outstanding accrual, expected customer losses and disposal costs   $ 5.8