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Contingencies and Significant Estimates (Details) - USD ($)
 3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Product liability reserves      
Warranty claims reserves $ 26,600,000 $ 28,600,000 $ 32,400,000
Standard product warranty, low end of range (in months) 12 months    
Standard product warranty, high end of range (in months) 60 months    
Period over which product liability self-insurance retention levels have fluctuated (in years) 10 years    
Product liability reserves $ 23,700,000 $ 21,700,000  
Maximum      
Product liability reserves      
Product liability self-insurance maximum retention level for new occurrence $ 2,000,000.0