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Commitments And Contingencies (Tables)
 12 Months Ended
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]  
Warranty Accrual
The following is a rollforward of the Company’s accrued warranty liability ($ in millions):
 
2019
 
2018
Balance, January 1
$
9.7

 
$
10.8

Accruals for warranties issued during the year
18.1

 
14.6

Settlements made
(18.1
)
 
(15.4
)
Effect of foreign currency translation
(0.1
)
 
(0.3
)
Balance, December 31
$
9.6

 
$
9.7