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Warranty (Tables)
6 Months Ended
Jan. 31, 2021
Standard Product Warranty Disclosure [Abstract]  
Reconciliation of warranty reserves The reconciliation of warranty reserves is as follows (in millions):
 Six Months Ended
January 31,
 20212020
Balance at beginning of period$9.5 $11.2 
Accruals for warranties issued during the reporting period0.3 0.6 
Accruals related to pre-existing warranties (including changes in estimates)(1.4)(0.5)
Settlements made during the period(1.4)(1.4)
Balance at end of period$7.0 $9.9