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Revenue Recognition - Narrative (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2020
segment
Jun. 30, 2020
product_category
segment
Disaggregation of Revenue [Line Items]    
Refund period   90 days
Number of principal categories of products | product_category   6
Number of business segments | segment 4 4
Maximum    
Disaggregation of Revenue [Line Items]    
Contract with customer, contract term   1 year