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Significant Accounting Policies Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2017
New Accounting Pronouncements and Changes in Accounting Principles |  |
Excess Tax Benefit | $ 4,397 | $ 7,546
Off Road Vehicle |  |
Product Warranty Liability [Line Items] |  |
Period of warranties provided by Polaris |  | 6 months
Motorcycles | Maximum |  |
Product Warranty Liability [Line Items] |  |
Period of warranties provided by Polaris |  | 2 years
Tires And Other | Transamerican Auto Parts | Minimum |  |
Product Warranty Liability [Line Items] |  |
Period of warranties provided by Polaris |  | 2 years
Tires And Other | Transamerican Auto Parts | Maximum |  |
Product Warranty Liability [Line Items] |  |
Period of warranties provided by Polaris |  | 5 years
Powertrains |  |
Product Warranty Liability [Line Items] |  |
Period of warranties provided by Polaris |  | 5 years

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