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Employee Benefits (Tables) | 6 Months Ended
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Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract] |
Schedule of (Income) Charges Related to Benefit Plans | The following table presents the components of net periodic postretirement benefit cost (income) for the VEBAs 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,
| 2015 |  | 2014 |  | 2015 |  | 2014
VEBAs: |  |  |  |  |  |  |
Service cost 1 | $ | — |  |  | $ | 0.5 |  |  | $ | — |  |  | $ | 1.1 |
Interest cost | 0.7 |  |  | 4.2 |  |  | 1.4 |  |  | 8.3 |
Expected return on plan assets | (1.1 | ) |  | (12.8 | ) |  | (2.2 | ) |  | (25.6 | )
Amortization of prior service cost | 0.8 |  |  | 2.6 |  |  | 1.5 |  |  | 5.4 |
Amortization of net actuarial loss (gain) | 0.2 |  |  | (0.6 | ) |  | 0.5 |  |  | (0.9 | )
Total net periodic postretirement benefit cost (income) relating to VEBAs | 0.6 |  |  | (6.1 | ) |  | 1.2 |  |  | (11.7 | )
Loss on removal of Union VEBA net assets 2 | 1.6 |  |  | — |  |  | 493.8 |  |  | — |
Total VEBAs | 2.2 |  |  | (6.1 | ) |  | 495.0 |  |  | (11.7 | )
Other employee benefit plans: |  |  |  |  |  |  |
Deferred compensation plan | 0.1 |  |  | 0.4 |  |  | 0.5 |  |  | 0.6 |
Defined contribution plans | 1.7 |  |  | 1.5 |  |  | 5.7 |  |  | 5.5 |
Multiemployer pension plans | 0.9 |  |  | 0.9 |  |  | 1.8 |  |  | 1.8 |
Total other employee benefit plans | $ | 2.7 |  |  | $ | 2.8 |  |  | $ | 8.0 |  |  | $ | 7.9 |
Total | $ | 4.9 |  |  | $ | (3.3 | ) |  | $ | 503.0 |  |  | $ | (3.8 | )
Allocation of (Income) Charges Relating to Benefit Plans by Segment | (in millions of dollars – see Note 11):
| Quarter Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Fabricated Products | $ | 2.4 |  |  | $ | 2.3 |  |  | $ | 7.0 |  |  | $ | 6.9 |
All Other | 2.5 |  |  | (5.6 | ) |  | 496.0 |  |  | (10.7 | )
Total | $ | 4.9 |  |  | $ | (3.3 | ) |  | $ | 503.0 |  |  | $ | (3.8 | )

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- Definition Allocation of costs relating to retirement plans + References No definition available. + Details
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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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