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Postretirement Health Care and Life Insurance Benefits (Details 2) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Reconciled amount of plans funded status |  |  |  |
Other |  | $ 0.0 | $ 3.7 |
Postretirement Health Care and Life Insurance Benefits [Member] |  |  |  |
Reconciled amount of plans funded status |  |  |  |
Projected benefit obligation at beginning of period |  | 776.1 | 839.1 |
Service cost |  | 10.4 | 11.2 | $ 12.2
Interest cost |  | 34.5 | 33.8 | 36.4
Participant contributions |  | 0.6 | 1.7 |
Plan changes | [1] | 7.2 | (16.6) |
Benefits paid |  | 49.0 | 46.5 |
Actuarial (gain) loss | [2] | 32.3 | (35.1) |
Settlement charges related to the Patriot bankruptcy | [3] | 0.0 | (15.2) |
Special termination benefits | [4] | 0.0 | 0.0 | 1.6
Projected benefit obligation at end of period |  | 812.1 | 776.1 | 839.1
Fair value of plan assets at beginning of period |  | 0.0 | 0.0 |
Employer contributions |  | 48.4 | 44.8 |
Participant contributions |  | 0.6 | 1.7 |
Benefits paid |  | (49.0) | (46.5) |
Fair value of plan assets at end of period |  | 0.0 | 0.0 | $ 0.0
Funded status at end of year |  | (812.1) | (776.1) |
Less current portion (included in Accounts payable and accrued expenses) |  | 55.8 | 53.2 |
Noncurrent obligation (included in Accrued postretirement benefit costs) |  | $ (756.3) | $ (722.9) |
[1] | Refer to Note 27. "Matters Related to the Bankruptcy of Patriot Coal Corporation" herein for additional details related to the changes in the benefit obligation.
[2] | {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOjAzMGE2Y2MzMmUxODQ1MzJhMmVjZTQ0OWVkOTdmN2QwfFRleHRTZWxlY3Rpb246NkVFOEEzMTJDMzMyQUQzNkI2RUZBMERDNTk0NzNBREUM}
[3] | {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOjAzMGE2Y2MzMmUxODQ1MzJhMmVjZTQ0OWVkOTdmN2QwfFRleHRTZWxlY3Rpb246MDAxMDI5OTE5RkQ1NEU4Q0JFNzdBMERDNTk0N0VGRjEM}
[4] | Reflected in "Restructuring and pension settlement charges" in the consolidated statement of operations for the year ended December 31, 2014.

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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. + 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 (a)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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