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Financial Services Arrangements - Additional Information (Detail) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Investments in and Advances to Affiliates [Line Items]    
Investment in affiliates $ 104,060 $ 92,059
Trade receivables, net 217,231 $ 197,082
TCF [Member]    
Investments in and Advances to Affiliates [Line Items]    
Aggregate repurchase obligation, amount $ 165,400  
Polaris Acceptance    
Investments in and Advances to Affiliates [Line Items]    
Equity method investment ownership percentage 50.00%  
Net amount financed for dealers $ 1,391,155  
Trade receivables, net 660,165  
Aggregate repurchase obligation, amount 180,557  
Securitization Facility    
Investments in and Advances to Affiliates [Line Items]    
Outstanding balance of receivables $ 730,990  
TCF [Member] | Maximum    
Investments in and Advances to Affiliates [Line Items]    
Aggregate repurchase obligation, percentage 100.00%  
Polaris Acceptance | Maximum    
Investments in and Advances to Affiliates [Line Items]    
Aggregate repurchase obligation, percentage 15.00%