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Warranty Costs (Tables)
 3 Months Ended
Mar. 31, 2021
Guarantees [Abstract]  
Changes in Carrying Amount of Accrued Product Warranty Costs Changes in the carrying amount of accrued product warranty costs for each of the quarters ended March 31, 2021 and 2020 are as follows:

 

 

 

March 31, 2021

 

 

March 31, 2020

 

Balance at beginning of period

 

$

9.6

 

 

$

10.0

 

Accrued current period warranty expense

 

 

0.9

 

 

 

1.0

 

Payments and adjustments

 

 

(0.8

)

 

 

(1.4

)

Balance at end of period

 

$

9.7

 

 

$

9.6