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Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2021
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:
March 31,December 31,
(in millions)20212020
Finished goods$171.3 $170.2 
Work-in-process10.6 12.6 
Raw materials and supplies136.9 129.3 
 $318.8 $312.1 
Changes in Accrued Sales Returns
The Company had the following activity for sales returns from December 31, 2020 to March 31, 2021:
(in millions)
Balance as of December 31, 2020$44.9 
Amounts accrued36.7 
Returns charged to accrual(33.4)
Balance as of March 31, 2021$48.2 
Summary of Warranty Activity
The Company had the following activity for its accrued warranty expense from December 31, 2020 to March 31, 2021:
(in millions)
Balance as of December 31, 2020$44.2 
Amounts accrued5.8 
Warranties charged to accrual(5.7)
Balance as of March 31, 2021$44.3 
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, 2020 to March 31, 2021:

(in millions)
Balance as of December 31, 2020
$71.6 
Amounts accrued2.5 
Write-offs charged against the allowance(1.6)
Balance as of March 31, 2021
$72.5