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PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Tables) | 6 Months Ended
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Jun. 30, 2015
Postemployment Benefits [Abstract] |
Schedule of Net Benefit Costs [Table Text Block] | The following are the components of defined benefit pension and OPEB expense for the three and six months ended June 30, 2015 and 2014: Defined Benefit Pension Expense
| (In Millions)
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Service cost | $ | 6.3 |  |  | $ | 6.8 |  |  | $ | 12.6 |  |  | $ | 13.5 |
Interest cost | 9.5 |  |  | 10.1 |  |  | 18.9 |  |  | 20.2 |
Expected return on plan assets | (15.0 | ) |  | (14.5 | ) |  | (29.9 | ) |  | (29.0 | )
Amortization: |  |  |  |  |  |  |
Prior service costs | 0.6 |  |  | 0.6 |  |  | 1.2 |  |  | 1.2 |
Net actuarial loss | 5.4 |  |  | 3.6 |  |  | 10.8 |  |  | 7.1 |
Curtailments/settlements | — |  |  | $ | 0.9 |  |  | 0.3 |  |  | 1.2 |
Net periodic benefit cost to continuing operations | $ | 6.8 |  |  | $ | 7.5 |  |  | $ | 13.9 |  |  | $ | 14.2 |
Other Postretirement Benefits Expense
| (In Millions)
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Service cost | $ | 1.5 |  |  | $ | 1.6 |  |  | $ | 3.0 |  |  | $ | 3.3 |
Interest cost | 3.2 |  |  | 3.4 |  |  | 6.5 |  |  | 6.8 |
Expected return on plan assets | (4.6 | ) |  | (4.3 | ) |  | (9.2 | ) |  | (8.6 | )
Amortization: |  |  |  |  |  |  |
Prior service costs | (0.9 | ) |  | (0.9 | ) |  | (1.8 | ) |  | (1.8 | )
Net actuarial loss | — |  |  | 1.2 |  |  | 3.1 |  |  | 2.5 |
Net periodic benefit cost to continuing operations | $ | (0.8 | ) |  | $ | 1.0 |  |  | $ | 1.6 |  |  | $ | 2.2 |

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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=35743120&loc=d3e1928-114920 + Details
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