Business Segments (Information By Strategic Business Units) (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Apr. 01, 2018
Segment Reporting Information
Revenue	$ 1,384,380	$ 1,542,121
Selling, administrative and engineering expense	268,625	290,186
Restructuring expense	13,630	46,842
Costs and expenses	848,198	890,174
Operating income	167,112	236,417
Motorcycles and Related Products
Segment Reporting Information
Revenue	1,195,637	1,363,947
Restructuring expense	14,024	46,842
Financial Services
Segment Reporting Information
Revenue	188,743	178,174
Operating Segments \| Motorcycles and Related Products
Segment Reporting Information
Revenue	1,195,637	1,363,947
Gross profit	347,439	473,773
Selling, administrative and engineering expense	225,428	254,093
Restructuring expense	13,630	46,842
Operating income	108,381	172,838
Operating Segments \| Financial Services
Segment Reporting Information
Revenue	188,743	178,174
Costs and expenses	130,012	114,595
Operating income	$ 58,731	$ 63,579

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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