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v2.3.0.11

Pension and Post retirement Plans (Tables) | 6 Months Ended
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Jun. 30, 2011
Pension and Post-retirement Plans [Abstract] |
Components of Net Periodic Benefit Cost | The components of net periodic benefit cost recorded for the second quarters of 2011 and 2010 were as follows (in millions):
|  | Pension Benefits |  | Post-retirement Benefits
|  | 2011 |  | 2010 |  | 2011 |  | 2010
Service cost |  | $ | 2.1 |  |  | $ | 1.8 |  |  | $ | 0.3 |  |  | $ | 0.3 |
Interest cost |  |  | 5.0 |  |  |  | 4.8 |  |  |  | 1.0 |  |  |  | 0.8 |
Expected return on plan assets |  |  | (5.7 | ) |  |  | (5.3 | ) |  |  | -- |  |  |  | -- |
Amortization of prior service cost |  |  | 0.2 |  |  |  | 0.1 |  |  |  | 0.1 |  |  |  | 0.1 |
Amortization of net loss |  |  | 2.3 |  |  |  | 1.4 |  |  |  | 0.5 |  |  |  | -- |
Net periodic benefit cost |  | $ | 3.9 |  |  | $ | 2.8 |  |  | $ | 1.9 |  |  | $ | 1.2 |
The components of net periodic benefit cost recorded for the first half of 2011 and 2010 were as follows (in millions):
|  | Pension Benefits |  | Post-retirement Benefits
|  | 2011 |  | 2010 |  | 2011 |  | 2010
Service cost |  | $ | 4.4 |  |  | $ | 3.9 |  |  | $ | 0.6 |  |  | $ | 0.5 |
Interest cost |  |  | 10.0 |  |  |  | 9.7 |  |  |  | 1.9 |  |  |  | 1.6 |
Expected return on plan assets |  |  | (11.4 | ) |  |  | (10.3 | ) |  |  | -- |  |  |  | -- |
Amortization of prior service cost |  |  | 0.4 |  |  |  | 0.3 |  |  |  | 0.2 |  |  |  | 0.2 |
Amortization of net loss |  |  | 4.4 |  |  |  | 4.1 |  |  |  | 1.0 |  |  |  | 0.1 |
Net periodic benefit cost |  | $ | 7.8 |  |  | $ | 7.7 |  |  | $ | 3.7 |  |  | $ | 2.4 |

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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 -Topic 715 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920 + Details
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