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Summary of Significant Accounting Policies (Tables)
6 Months Ended
Jun. 30, 2020
Accounting Policies [Abstract]  
Schedule of inventory Inventories are stated at the lower of cost and net realizable value, determined by the first-in, first-out method, and consist of the following:
June 30,December 31,
(in millions)20202019
Finished goods$136.4  $157.4  
Work-in-process10.6  10.8  
Raw materials and supplies111.8  92.3  
 $258.8  $260.5  
Changes in accrued sales returns
The Company had the following activity for sales returns from December 31, 2019 to June 30, 2020:
(in millions)
Balance as of December 31, 2019$39.3  
Amounts accrued51.3  
Returns charged to accrual(49.3) 
Balance as of June 30, 2020$41.3  
Warranty activity
The Company had the following activity for its accrued warranty expense from December 31, 2019 to June 30, 2020:
(in millions)
Balance as of December 31, 2019$41.6  
Amounts accrued9.4  
Warranties charged to accrual(10.6) 
Balance as of June 30, 2020$40.4  
Schedule of New Accounting Pronouncements and Changes in Accounting Principles
The Company had the following activity for its allowance for credit losses from December 31, 2019 to June 30, 2020:

(in millions)
Balance as of December 31, 2019
$71.9  
ASU 2016-13 adoption impact8.9  
Amounts accrued26.5  
Write-offs charged against the allowance(13.4) 
Balance as of June 30, 2020
$93.9