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Employee Benefits (Tables) | 6 Months Ended
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Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract] |
Schedule of (Income) Charges Related to Benefit Plans | The following table presents the components of net periodic benefit cost for the Salaried VEBA and charges relating to all other employee benefit plans for the periods presented (in millions of dollars):
| Quarter Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Salaried VEBA: |  |  |  |  |  |  |
Service cost 1 | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Interest cost | 0.8 |  |  | 0.7 |  |  | 1.5 |  |  | 1.4 |
Expected return on plan assets | (1.0 | ) |  | (1.1 | ) |  | (2.0 | ) |  | (2.2 | )
Amortization of prior service cost | 1.0 |  |  | 0.8 |  |  | 2.0 |  |  | 1.5 |
Amortization of net actuarial loss | 0.1 |  |  | 0.2 |  |  | 0.2 |  |  | 0.5 |
Total net periodic postretirement benefit cost relating to Salaried VEBA | 0.9 |  |  | 0.6 |  |  | 1.7 |  |  | 1.2 |
Loss (gain) on removal of Union VEBA net assets | — |  |  | 1.6 |  |  | (0.1 | ) |  | 493.8 |
Total VEBAs | 0.9 |  |  | 2.2 |  |  | 1.6 |  |  | 495.0 |
Other employee benefit plans: |  |  |  |  |  |  |
Deferred compensation plan | 0.2 |  |  | 0.1 |  |  | 0.3 |  |  | 0.5 |
Defined contribution plans | 1.7 |  |  | 1.7 |  |  | 5.7 |  |  | 5.7 |
Multiemployer pension plans | 1.2 |  |  | 0.9 |  |  | 2.3 |  |  | 1.8 |
Total other employee benefit plans | $ | 3.1 |  |  | $ | 2.7 |  |  | $ | 8.3 |  |  | $ | 8.0 |
Total | $ | 4.0 |  |  | $ | 4.9 |  |  | $ | 9.9 |  |  | $ | 503.0 |
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1 | The service cost was insignificant for all periods presented.
The following table presents the allocation of the charges detailed above, by reportable segment and business unit (in millions of dollars – see Note 11):
| Quarter Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Fabricated Products | $ | 2.8 |  |  | $ | 2.4 |  |  | $ | 7.5 |  |  | $ | 7.0 |
All Other | 1.2 |  |  | 2.5 |  |  | 2.4 |  |  | 496.0 |
Total | $ | 4.0 |  |  | $ | 4.9 |  |  | $ | 9.9 |  |  | $ | 503.0 |

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- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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