Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 17, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Trading Symbol	PII
Entity Registrant Name	POLARIS INDUSTRIES INC/MN
Entity Central Index Key	0000931015
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		61,780,602