Investment in Other Affiliates	12 Months Ended
Dec. 31, 2017
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Investment in Other Affiliates	Investment in Other Affiliates The Company has certain investments in nonmarketable securities of strategic companies. As of December 31, 2017 and 2016, the Company’s investment in Eicher-Polaris Private Limited (EPPL) represents the majority of these investments and is recorded as a component of other long-term assets in the accompanying consolidated balance sheets.. EPPL is a joint venture established in 2012 with Eicher Motors Limited (“Eicher”). Polaris and Eicher each control 50 percent of the joint venture, which is intended to design, develop and manufacture a full range of new vehicles for India and other emerging markets. The investment in EPPL is accounted for under the equity method, with Polaris’ proportionate share of income or loss recorded within the consolidated financial statements on a one month lag due to financial information not being available timely. As of December 31, 2017 and 2016, the carrying value of the Company’s investment in EPPL was $18,616,000 and $20,182,000, respectively. Through December 31, 2017, Polaris has invested $46,810,000 in the joint venture. Polaris’ share of EPPL loss for the years ended December 31, 2017 and 2016 was $6,142,000 and $7,175,000, respectively, and is included in equity in loss of other affiliates on the consolidated statements of income. Polaris will impair or write off an investment and recognize a loss if and when events or circumstances indicate there is impairment in the investment that is other-than-temporary. When necessary, Polaris evaluates investments in nonmarketable securities for impairment, utilizing level 3 fair value inputs. As a result of the Victory^® Motorcycles wind down, the Company recorded an impairment of a cost-method investment in Brammo, Inc. in the first quarter of 2017. The impairment was recorded within other expense, net in the consolidated statements of income, and reduced the Brammo investment. See Note 14 for additional discussion related to charges incurred related to the Victory Motorcycles wind down. In October 2017, an agreement was signed to sell the assets of Brammo, Inc. to a third party. The sale was completed in the fourth quarter of 2017, and as a result of the sale, Polaris recorded a gain, which is included in Other expense, net on the consolidated statements of income. Polaris expects to receive additional distributions from Brammo in 2018, as a result of the sale, and will record any resulting gains when the distributions are received. There were no impairments recorded related to these investments in 2016.

Investment in Other Affiliates

The Company has certain investments in nonmarketable securities of strategic companies. As of December 31, 2017 and 2016, the Company’s investment in Eicher-Polaris Private Limited (EPPL) represents the majority of these investments and is recorded as a component of other long-term assets in the accompanying consolidated balance sheets..

EPPL is a joint venture established in 2012 with Eicher Motors Limited (“Eicher”). Polaris and Eicher each control 50 percent of the joint venture, which is intended to design, develop and manufacture a full range of new vehicles for India and other emerging markets. The investment in EPPL is accounted for under the equity method, with Polaris’ proportionate share of income or loss recorded within the consolidated financial statements on a one month lag due to financial information not being available timely. As of December 31, 2017 and 2016, the carrying value of the Company’s investment in EPPL was $18,616,000 and $20,182,000, respectively. Through December 31, 2017, Polaris has invested $46,810,000 in the joint venture. Polaris’ share of EPPL loss for the years ended December 31, 2017 and 2016 was $6,142,000 and $7,175,000, respectively, and is included in equity in loss of other affiliates on the consolidated statements of income.

Polaris will impair or write off an investment and recognize a loss if and when events or circumstances indicate there is impairment in the investment that is other-than-temporary. When necessary, Polaris evaluates investments in nonmarketable securities for impairment, utilizing level 3 fair value inputs. As a result of the Victory^® Motorcycles wind down, the Company recorded an impairment of a cost-method investment in Brammo, Inc. in the first quarter of 2017. The impairment was recorded within other expense, net in the consolidated statements of income, and reduced the Brammo investment. See Note 14 for additional discussion related to charges incurred related to the Victory Motorcycles wind down. In October 2017, an agreement was signed to sell the assets of Brammo, Inc. to a third party. The sale was completed in the fourth quarter of 2017, and as a result of the sale, Polaris recorded a gain, which is included in Other expense, net on the consolidated statements of income. Polaris expects to receive additional distributions from Brammo in 2018, as a result of the sale, and will record any resulting gains when the distributions are received. There were no impairments recorded related to these investments in 2016.