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Related Party Transactions (Details) (Navistar, USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended			0 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Jul. 18, 2007	Jul. 18, 2007 Common stock	Dec. 31, 1996 Common stock
Related party transactions:
Common stock issued (in shares)					4,264,000
Number of shares repurchased				3,600,000
Percent ownership interest of third party			9.10%
Total sales	$ 63,303	$ 63,182
Accounts receivable	$ 7,617	$ 11,495

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For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Number of new stock issued during the period.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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