Significant Accounting Policies Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
New Accounting Pronouncements and Changes in Accounting Principles
Net cash provided by (used for) operating activities	$ 3,189	$ (47,029)
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
Accounting Standard Update 2016-18
New Accounting Pronouncements and Changes in Accounting Principles
Net cash provided by (used for) operating activities		$ (3,887,000)