v2.4.0.8

Pension And Other Postretirement Benefits (Tables) | 6 Months Ended
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Jun. 30, 2013
Pension and Other Postretirement Benefit Expense [Abstract] |
Components Of The Plans' Net Periodic Benefits Cost | The following tables provide the components of the plans’ net periodic benefits cost for the three and six months ended June 30, 2013 and 2012:
| Pension Benefits |  | Other Postretirement Benefits
Three Months Ended June 30, (in millions) | 2013 |  | 2012 |  | 2013 |  | 2012
Components of Net Periodic Benefit Cost |  |  |  |  |  |  |
Service cost | $ | 9.3 |  |  | $ | 9.4 |  |  | $ | 3.0 |  |  | $ | 2.8 |
Interest cost | 24.3 |  |  | 28.2 |  |  | 8.1 |  |  | 9.3 |
Expected return on assets | (42.1 | ) |  | (41.1 | ) |  | (7.6 | ) |  | (6.7 | )
Amortization of transition obligation | — |  |  | — |  |  | 0.1 |  |  | 0.3 |
Amortization of prior service cost | 0.1 |  |  | 0.1 |  |  | (0.2 | ) |  | (0.1 | )
Recognized actuarial loss | 19.7 |  |  | 20.3 |  |  | 2.8 |  |  | 2.4 |
Settlement loss | 3.6 |  |  | — |  |  | — |  |  | — |
Total Net Periodic Benefit Costs | $ | 14.9 |  |  | $ | 16.9 |  |  | $ | 6.2 |  |  | $ | 8.0 |
| Pension Benefits |  | Other Postretirement Benefits
Six Months Ended June 30, (in millions) | 2013 |  | 2012 |  | 2013 |  | 2012
Components of Net Periodic Benefit Cost |  |  |  |  |  |  |
Service cost | $ | 18.7 |  |  | $ | 18.8 |  |  | $ | 6.0 |  |  | $ | 5.6 |
Interest cost | 48.6 |  |  | 56.4 |  |  | 16.2 |  |  | 18.6 |
Expected return on assets | (84.5 | ) |  | (82.2 | ) |  | (15.2 | ) |  | (13.4 | )
Amortization of transition obligation | — |  |  | — |  |  | 0.2 |  |  | 0.6 |
Amortization of prior service cost | 0.2 |  |  | 0.2 |  |  | (0.4 | ) |  | (0.2 | )
Recognized actuarial loss | 40.4 |  |  | 40.6 |  |  | 5.6 |  |  | 4.8 |
Settlement loss | 24.3 |  |  | — |  |  | — |  |  | — |
Total Net Periodic Benefit Costs | $ | 47.7 |  |  | $ | 33.8 |  |  | $ | 12.4 |  |  | $ | 16.0 |
Schedule of Assumptions Used | The following table provides the key assumptions that were used to calculate the pension benefit obligation and the net periodic benefit cost at the measurement dates of May 31, 2013, February 28, 2013 and December 31, 2012:
| May 31, 2013 |  | February 28, 2013 |  | December 31, 2012
Actuarial Assumptions |  |  |  |  |
Discount Rate | 3.75 | % |  | 3.50 | % |  | 3.63 | %
Expected return on assets | 8.30 | % |  | 8.30 | % |  | 8.30 | %

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- Definition Schedule of net benefit costs. + References No definition available. + Details
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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on 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 (k) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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