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Equity - Treasury Stock (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended		12 Months Ended		0 Months Ended
	Dec. 31, 2012 Navistar Customer concentration risk Sales	Jul. 18, 2007 Navistar	Dec. 31, 2012 Common stock Restricted stock	Dec. 31, 2011 Common stock Restricted stock	Jul. 18, 2007 Common stock Navistar
Treasury stock:
Number of shares repurchased					3,600,000
Cost per share repurchased					$ 7.25
Stock repurchased, value					$ 26,100
Costs associated with repurchase					$ 115
Common shares owned by third party		664,000
Percent ownership interest of third party		9.10%
Concentration risk percentage	39.00%
Shares paid for tax witholding for share-based compensation			31,455	26,699

X

- Definition

Common Stock, Percentage of Common Shares Held by a Third Party

+ References

No definition available.

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- Definition

Common Stock, Shares Owned by a Third Party

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No definition available.

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X

- Definition

Treasury Stock, Repurchase Costs

+ References

No definition available.

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X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

-Section B

-Paragraph 11A

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

-Section B

-Paragraph 11A

-Chapter 1

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Paragraph 29, 30, 31

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Name Regulation S-X (SX)

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

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