Litigation and Contingent Liabilities (Details) - dealer		9 Months Ended
Feb. 01, 2013	Sep. 30, 2016
Loss Contingencies [Line Items]
Loss Contingency, Claims Dismissed, Number		1
Number of dealers alleging damages	6	4

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.

No definition available.

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Period Type:	duration