Business Segments - Information By Strategic Business Units (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Segment Reporting Information
Selling, administrative and engineering expense	$ 307,617	$ 313,047	$ 576,242	$ 603,233
Restructuring expense (benefit)	10,423	12,370	24,053	59,212
Costs and expenses	979,266	993,036	1,827,464	1,883,210
Operating income	256,257	323,947	423,369	560,364
Motorcycles and Related Products
Segment Reporting Information
Motorcycles and Related Products	1,434,004	1,525,121	2,629,641	2,889,068
Restructuring expense (benefit)	10,424	12,370	24,448	59,212
Financial Services
Segment Reporting Information
Financial Services	198,615	188,102	387,358	366,276
Operating Segments \| Motorcycles and Related Products
Segment Reporting Information
Motorcycles and Related Products	1,434,004	1,525,121	2,629,641	2,889,068
Gross profit	454,738	532,085	802,177	1,005,858
Selling, administrative and engineering expense	263,587	276,309	489,015	530,402
Restructuring expense (benefit)	10,423	12,370	24,053	59,212
Operating income	180,728	243,406	289,109	416,244
Operating Segments \| Financial Services
Segment Reporting Information
Financial Services	198,615	188,102	387,358	366,276
Costs and expenses	123,086	107,561	253,098	222,156
Operating income	$ 75,529	$ 80,541	$ 134,260	$ 144,120

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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