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Revenue Voluntary Recall (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Dec. 31, 2018
Revenue from Contract with Customer [Abstract]      
Provision for sales returns $ (0.9) $ (4.9) $ (11.3)