Commitments and Contingencies - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Commitments And Contingencies [Line Items]
Period over which product liability self-insurance retention levels have fluctuated (in years)	10 years
Product liability reserves	$ 12,200,000	$ 12,800,000
Warranty claims reserves	59,800,000	$ 60,600,000
Gain on settlement	24,400,000
Other Income (Expense) - Net
Commitments And Contingencies [Line Items]
Gain on settlement	15,500,000
Engineering, Selling and Administrative Expense
Commitments And Contingencies [Line Items]
Gain on settlement	8,900,000
Maximum
Commitments And Contingencies [Line Items]
Product liability self-insurance maximum retention level for new occurrence	$ 2,000,000.0