Fair Value - Additional Information (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018	Jul. 01, 2018
Fair Value Adjustment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Repossessed inventory	$ 5.9	$ 9.7	$ 2.8
Significant Other Observable Inputs (Level 2) | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Repossessed inventory	$ 19.4	$ 20.2	$ 16.4