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Commitments and Contingencies (Details 2) (USD $) In Millions, unless otherwise specified | Jun. 30, 2013 | Jun. 30, 2013 Minimum | Jun. 30, 2013 Maximum | Mar. 31, 2013 Mexico
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Income tax contingencies |  |  |  |
Aggregate remaining amounts assessed or expected to assessed range |  | $ 30 | $ 35 |
Aggregate remaining amounts assessed or expected to assessed range |  |  |  | 20
Employer's liability claims subject to per-occurrence deductible | 2.0 |  |  |
Workers automobile claims | 1.0 |  |  |
General liability claims subject to per-occurrence deductible | $ 5.0 |  |  |

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- Definition The amount the liability recorded for the income tax examination increased or decreased in the current year/accounting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition The estimated range of reasonably possible losses resulting from an adverse position taken by a taxing authority. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 14 -Paragraph 3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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