Business Segments (Information By Strategic Business Units) (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 26, 2017	Mar. 27, 2016
Segment Reporting Information [Line Items]
Motorcycles net revenue	$ 1,328,711	$ 1,576,610
Selling, administrative and engineering expense	272,350	291,768
Financial Services revenue	173,221	173,358
Operating income	291,478	388,828
Operating Segments \| Motorcycles
Segment Reporting Information [Line Items]
Motorcycles net revenue	1,328,711	1,576,610
Gross profit	477,485	590,280
Selling, administrative and engineering expense	238,643	257,823
Operating income	238,842	332,457
Operating Segments \| Financial Services
Segment Reporting Information [Line Items]
Financial Services revenue	173,221	173,358
Financial Services expense	120,585	116,987
Operating income	$ 52,636	$ 56,371

The aggregate costs incurred during the reporting period related to financial services rendered by an entity.

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311

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