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Employee Benefit Plans - Funded Status (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Change in benefit obligation: |  |  |
Benefit obligation at beginning of year | $ 133.8 | $ 121.0 |
Service cost | 2.5 | 2.4 | $ 2.2
Interest cost | 3.8 | 4.2 | 4.1
Participant contributions | 0.9 | 1.0 |
Actuarial (gain) loss | (6.6) | 1.2 |
Benefits paid | (3.8) | (6.0) |
Other, principally foreign exchange | (5.5) | 10.0 |
Benefit obligation at end of year |  | 133.8 | 121.0
Change in plan assets: |  |  |
Fair value of plan assets at beginning of year | 115.5 | 99.3 |
Actual (loss) gain on plan assets | (4.1) | 10.4 |
Employer contributions | 3.2 | 3.1 |
Participant contributions | 0.9 | 1.0 |
Benefits paid | (3.8) | (6.0) |
Other, principally foreign exchange | (4.8) | 7.7 |
Fair value of assets at end of year | 106.9 | 115.5 | $ 99.3
Amounts recognized in the consolidated balance sheets: |  |  |
Funded status (current) | 0.0 | 0.0 |
Funded status (non-current) | (18.2) | (18.3) |
Accumulated other comprehensive loss: |  |  |
Unrecognized actuarial loss | 24.7 | 20.6 |
Unrecognized prior service cost | 0.5 | 0.5 |
Deferred taxes | (4.7) | (4.7) |
Net amount recognized | 2.3 | (1.9) |
Defined Benefit Plan, Accumulated Benefit Obligation | $ 125.1 | $ 134.0 |

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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