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Retirement Plans (Tables) | 3 Months Ended
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Mar. 31, 2014
Retirement Plans [Abstract] |
Components of Net Periodic Benefit Cost | The components of the net periodic benefit cost for our plans were as follows:
|  | 3 Months Ended March 31, |
|  | Defined Benefit |  |  | Retiree Health |
|  | Pension Plans |  |  | Care Plan |
|  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Service cost |  | $ | 2.0 |  |  | $ | 2.2 |  |  | $ | - |  |  | $ | - |
Interest cost |  |  | 3.3 |  |  |  | 3.1 |  |  |  | 0.2 |  |  |  | 0.3 |
Expected return on assets |  |  | (3.3 | ) |  |  | (2.8 | ) |  |  | - |  |  |  | - |
Other |  |  | 1.0 |  |  |  | 0.9 |  |  |  | - |  |  |  | 0.1 |
Net periodic benefit cost |  | $ | 3.0 |  |  | $ | 3.4 |  |  | $ | 0.2 |  |  | $ | 0.4 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + 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 (h) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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