Restructuring Activities - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended	24 Months Ended
	Sep. 27, 2020 USD ($) Employees numberOfPositions	Sep. 29, 2019 USD ($)	Sep. 27, 2020 USD ($) employee Employees	Sep. 29, 2019 USD ($)	Dec. 31, 2018 Employees	Dec. 31, 2019 USD ($)
Restructuring Cost and Reserve
Restructuring expenses	$ 17,839	$ 13,357	$ 17,839	$ 41,409
Employee Termination Benefits
Restructuring Cost and Reserve
Restructuring expenses	11,940		11,940
Contract Termination
Restructuring Cost and Reserve
Restructuring expenses	5,899		5,899
Non-Current Asset Adjustments
Restructuring Cost and Reserve
Restructuring expenses	$ 0		$ 0
2020 Restructuring Activities
Restructuring Cost and Reserve
Number of jobs eliminated | numberOfPositions	700
Expected number of employees eliminated | Employees	500		500
Restructuring expenses			$ 169,000
2020 Restructuring Activities | India
Restructuring Cost and Reserve
Expected number of employees eliminated | Employees	70		70
2020 Restructuring Activities | Employee Termination Benefits
Restructuring Cost and Reserve
Restructuring expenses			$ 34,000
2020 Restructuring Activities | Contract Termination
Restructuring Cost and Reserve
Restructuring expenses			103,000
2020 Restructuring Activities | Non-Current Asset Adjustments
Restructuring Cost and Reserve
Restructuring expenses			32,000
2020 Restructuring Activities | Motorcycles and Related Products
Restructuring Cost and Reserve
Restructuring expenses			155,000
2020 Restructuring Activities | Financial services
Restructuring Cost and Reserve
Restructuring expenses			$ 14,000
Manufacturing Optimization Plan
Restructuring Cost and Reserve
Restructuring expenses		13,152		38,308
Manufacturing Optimization Plan | Kansas City, Missouri
Restructuring Cost and Reserve
Number of jobs eliminated | employee			800
Manufacturing Optimization Plan | York, Pennsylvania
Restructuring Cost and Reserve
Number of jobs added | employee			450
Manufacturing Optimization Plan | Adelaide, Australia
Restructuring Cost and Reserve
Number of jobs eliminated | Employees			90
Manufacturing Optimization Plan | Employee Termination Benefits
Restructuring Cost and Reserve
Restructuring expenses		6,617		21,951
Manufacturing Optimization Plan | Non-Current Asset Adjustments
Restructuring Cost and Reserve
Restructuring expenses		0		0
Manufacturing Optimization Plan | Motorcycles and Related Products
Restructuring Cost and Reserve
Restructuring and consolidation costs						$ 122,200
Manufacturing Optimization Plan | Motorcycles and Related Products | Temporary Inefficiencies | Cost of Sales
Restructuring Cost and Reserve
Incremental cost of goods sold		2,500		10,000		$ 23,200
Reorganization Plan | Employee Termination Benefits
Restructuring Cost and Reserve
Restructuring expenses		$ 205		$ 3,101
Reorganization Plan | Motorcycles and Related Products
Restructuring Cost and Reserve
Restructuring and consolidation costs, positions eliminated | Employees					70