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12. Commitments & Contingent Liabilities Pension obligations and funded status (Tables) | 12 Months Ended
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Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items] |
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] | Obligations and Funded Status The following table sets forth the change in benefit obligations, fair value of plan assets and amounts recognized in the Consolidated Balance Sheets for the plans (in millions):
Change in benefit obligation: | 2017 | 2016
Benefit obligation at beginning of year | $122.7 | $120.8
Service cost | 6.5 |  | 6.1 |
Interest cost | 1.1 |  | 1.4 |
Plan participants' contributions | 2.8 |  | 2.6 |
Actuarial (gain) loss | 3.3 |  | — |
Gross benefits paid | (3.2 | ) | (3.3 | )
Plan amendments | 1.1 |  | — |
Special termination benefits | (2.0 | ) | — |
Settlements | (5.1 | ) | (2.5 | )
Change attributable to foreign exchange | 9.4 |  | (2.4 | )
Benefit obligation at end of year | 136.6 |  | 122.7 |
Change in plan assets: |  |
Fair value of plan assets at beginning year | 58.8 |  | 56.7 |
Actual return on plan assets | 0.5 |  | 1.3 |
Employer contributions | 4.0 |  | 4.7 |
Plan participants' contributions | 2.8 |  | 2.6 |
Gross benefits paid | (2.3 | ) | (2.9 | )
Settlements | (5.1 | ) | (2.5 | )
Change attributable to foreign exchange | 3.0 |  | (1.1 | )
Fair value of plan assets at end of year | 61.7 |  | 58.8 |
Under funded status of plans | $(74.9) | $(63.9)
Amounts recognized in the consolidated balance sheets: |  |
Current liabilities (Accrued payroll and employee benefits) | $(1.1) | $(0.5)
Noncurrent liabilities (Other long-term liabilities) | (73.8 | ) | (63.4 | )
Net liability, end of fiscal year | $(74.9) | $(63.9)

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- Definition Tabular disclosure of the change in the benefit obligation, fair value of plan assets, and funded status of pension plans or other employee benefit plans. + 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)(b)(c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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