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Financial Services Arrangements - Additional Information (Detail) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Investments in and Advances to Affiliates [Line Items]    
Investment in affiliates $ 44,900 $ 110,600
Trade receivables, net 241,300 $ 190,400
TCF [Member]    
Investments in and Advances to Affiliates [Line Items]    
Aggregate repurchase obligation, amount $ 80,900  
Polaris Acceptance    
Investments in and Advances to Affiliates [Line Items]    
Equity method investment ownership percentage 50.00%  
Net amount financed for dealers $ 733,000  
Trade receivables, net 357,800  
Aggregate repurchase obligation, amount 198,300  
Securitization Facility    
Investments in and Advances to Affiliates [Line Items]    
Outstanding balance of receivables $ 375,200  
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%