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Retirement Plans | 3 Months Ended
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Mar. 31, 2015
Retirement Plans [Abstract] |
Retirement Plans | (9) Retirement Plans The components of the net periodic benefit cost for our plans were as follows:
|  | 3 Months Ended March 31, |
|  | Defined Benefit |  |  | Retiree |
|  | Pension Plans |  |  | Health Care Plan |
|  | 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Service cost |  | $ | 1.8 |  |  | $ | 2.0 |  |  | $ | - |  |  | $ | - |
Interest cost |  |  | 2.7 |  |  |  | 3.3 |  |  |  | 0.2 |  |  |  | 0.2 |
Expected return on assets |  |  | (2.8 | ) |  |  | (3.3 | ) |  |  | - |  |  |  | - |
Other |  |  | 1.1 |  |  |  | 1.0 |  |  |  | (0.2 | ) |  |  | - |
Net periodic benefit cost |  | $ | 2.8 |  |  | $ | 3.0 |  |  | $ | - |  |  | $ | 0.2 |
During the three months ended March 31, 2015, contributions made to our pension plans were $2.7 and contributions made to our retiree health care plan were $0.3. During 2015, we expect to make total contributions of approximately $12.4 to our pension plans and to fund our retiree health care payments as incurred.

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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 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 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=35743120&loc=d3e2410-114920 Reference 3: 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=35742057&loc=SL14450702-114947 Reference 4: 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 Reference 5: 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 + Details
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