XML 48 R36.htm IDEA: XBRL DOCUMENT v3.21.1
Summary of Significant Accounting Policies - Changes In Accrued Sales Returns (Details) - Sales Returns
$ in Millions
3 Months Ended
Mar. 31, 2021
USD ($)
Changes in Accrued Sales Returns [Roll Forward]  
Beginning balance $ 44.9
Amounts accrued 36.7
Returns charged to accrual (33.4)
Ending balance $ 48.2