Business Segments (Information By Strategic Business Units) (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 25, 2017	Jun. 26, 2016	Jun. 25, 2017	Jun. 26, 2016
Segment Reporting Information [Line Items]
Motorcycles net revenue	$ 1,577,135	$ 1,670,113	$ 2,905,846	$ 3,246,723
Selling, administrative and engineering expense	291,450	319,844	563,800	611,612
Financial Services revenue	188,034	190,964	361,255	364,322
Operating income	401,582	412,322	693,060	801,150
Operating Segments \| Motorcycles
Segment Reporting Information [Line Items]
Motorcycles net revenue	1,577,135	1,670,113	2,905,846	3,246,723
Gross profit	575,623	607,558	1,053,108	1,197,838
Selling, administrative and engineering expense	255,976	284,809	494,619	542,632
Operating income	319,647	322,749	558,489	655,206
Operating Segments \| Financial Services
Segment Reporting Information [Line Items]
Financial Services revenue	188,034	190,964	361,255	364,322
Financial Services expense	106,099	101,391	226,684	218,378
Operating income	$ 81,935	$ 89,573	$ 134,571	$ 145,944

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

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The aggregate financial services revenue and operating interest income earned during the reporting period.

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The net result for the period of deducting operating expenses from operating revenues.

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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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