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Pension Benefits and Postretirement Benefits Other Than Pensions | 6 Months Ended
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Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract] |
Pension Benefits and Postretirement Benefits Other Than Pensions | Note 11 - Pension Benefits and Postretirement Benefits Other Than Pensions The components of Pension Expense for the six and three months ended June 30, 2015 and 2014 were:
|  | Six Months Ended |  | Three Months Ended
(Dollars in Millions) |  | Jun 30, 2015 |  | Jun 30, 2014 |  | Jun 30, 2015 |  | Jun 30, 2014
Service Cost Earned |  | $ | 5.2 |  |  | $ | 4.4 |  |  | $ | 2.6 |  |  | $ | 2.2 |
Interest Cost on Projected Benefit Obligation |  | 12.8 |  |  | 12.4 |  |  | 6.4 |  |  | 6.2 |
Expected Return on Plan Assets |  | (17.5 | ) |  | (17.5 | ) |  | (8.7 | ) |  | (8.8 | )
Amortization of Accumulated Net Unrecognized Pension Costs |  | 12.2 |  |  | 4.8 |  |  | 6.4 |  |  | 2.5 |
Total Pension Expense Recognized |  | $ | 12.7 |  |  | $ | 4.1 |  |  | $ | 6.7 |  |  | $ | 2.1 |
The components of Postretirement Benefits Other than Pensions Expense (Benefit) for the six and three months ended June 30, 2015 and 2014 were:
|  | Six Months Ended |  | Three Months Ended
(Dollars in Millions) |  | Jun 30, 2015 |  | Jun 30, 2014 |  | Jun 30, 2015 |  | Jun 30, 2014
Service Cost on Benefits Earned |  | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | 0.1 |  |  | $ | — |
Interest Cost on Projected Benefit Obligation |  | 0.5 |  |  | 0.6 |  |  | 0.2 |  |  | 0.3 |
Amortization of Accumulated Net Unrecognized Gain |  | (0.7 | ) |  | (0.9 | ) |  | (0.3 | ) |  | (0.6 | )
Total Postretirement Benefits Other than Pensions Expense (Benefit) |  | $ | (0.1 | ) |  | $ | (0.2 | ) |  | $ | — |  |  | $ | (0.3 | )

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49170332&loc=SL14450702-114947 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2410-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39675-114964 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414199&loc=d3e39622-114963 + Details
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