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Employee Benefit Plans (Details 5) (USD $) In Millions, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | ---
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | $ 373.7 | $ 380.1 |
Cash |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 1.7 | 2.1 |
Insurance group annuity contracts |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 118.3 | 111.1 |
Common/collective trust funds - Government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 3.0 | 8.9 |
Common/collective trust funds - Corporate and other non-government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 49.6 | 49.8 |
Common/collective trust funds - Government, corporate and other non-government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 111.6 | 95.5 |
Common/collective trust funds - Corporate equity |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 84.3 | 71.4 |
Common/collective trust funds - Customized strategy |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 5.2 | 41.3 |
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 1.7 | 2.1 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 1.7 | 2.1 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Insurance group annuity contracts |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common/collective trust funds - Government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common/collective trust funds - Corporate and other non-government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common/collective trust funds - Government, corporate and other non-government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common/collective trust funds - Corporate equity |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common/collective trust funds - Customized strategy |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Significant Other Observable Inputs (Level 2) |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 253.7 | 266.9 |
Significant Other Observable Inputs (Level 2) | Cash |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Significant Other Observable Inputs (Level 2) | Insurance group annuity contracts |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Significant Other Observable Inputs (Level 2) | Common/collective trust funds - Government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 3.0 | 8.9 |
Significant Other Observable Inputs (Level 2) | Common/collective trust funds - Corporate and other non-government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 49.6 | 49.8 |
Significant Other Observable Inputs (Level 2) | Common/collective trust funds - Government, corporate and other non-government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 111.6 | 95.5 |
Significant Other Observable Inputs (Level 2) | Common/collective trust funds - Corporate equity |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 84.3 | 71.4 |
Significant Other Observable Inputs (Level 2) | Common/collective trust funds - Customized strategy |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 5.2 | 41.3 |
Level 3 |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 118.3 | 111.1 |
Level 3 | Cash |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 | Insurance group annuity contracts |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 118.3 | 111.1 | 102.4
Level 3 | Common/collective trust funds - Government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 | Common/collective trust funds - Corporate and other non-government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 | Common/collective trust funds - Government, corporate and other non-government debt |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 | Common/collective trust funds - Corporate equity |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | 0 | 0 |
Level 3 | Common/collective trust funds - Customized strategy |  |  |
Plan assets using fair value hierarchy |  |  |
Fair value of plan assets | $ 0 | $ 0 |

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 + Details
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Balance Type: | debit
Period Type: | instant