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