Share-Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended			108 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested share-based equity awards	$ 41,600,000			$ 41,600,000
Weighted average period of recognition of unvested share-based equity awards (in years)	1 year 1 month 6 days
Unrecognized compensation cost related to unvested share-based equity awards, Stock Options	$ 4,200,000			4,200,000
Unrecognized compensation cost related to unvested share-based equity awards, Restricted Stock	$ 37,400,000			37,400,000
Weighted average remaining contractual life of option outstanding	5 years 4 months 24 days
Weighted average remaining contractual life of option exercisable	3 years 8 months 12 days
Estimated weighted average fair value of options granted	$ 13.58	$ 31.79	$ 43.39
Total intrinsic value of options exercised	$ 0
Total intrinsic value of options outstanding	12,500,000			12,500,000
Total intrinsic value of options exercisable	$ 0			$ 0
Weighted average fair values at the grant dates of grants awarded		$ 95.00	$ 138.98
Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares of common stock available for issuance	4,404,739			4,404,739
Omnibus Incentive Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option awards granted, vesting period	1 year
Omnibus Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option awards granted, vesting period	3 years
Omnibus Incentive Plan \| Deferred Stock Units \| Non-employee directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares granted	49,000	22,000	16,000
Additional shares issued to retired directors	19,000	12,000	12,000	110,000
Omnibus Incentive Plan \| Deferred Stock Units \| Non-employee directors \| Since 2007
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares granted	329,000
Stock Option Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares granted	887,888
Directors Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum shares authorized for issuance	500,000			500,000
Shares of common stock earned	73,000
Additional shares issued to retired directors	427,000
Liabilities under share plan	$ 8,400,000	$ 6,500,000		$ 8,400,000
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	912,601
Total intrinsic value of restricted stock expected to vest	$ 90,600,000			$ 90,600,000
Weighted average fair values at the grant dates of grants awarded	$ 40.76	$ 107.33	$ 110.39

Polaris Inc. 10-K