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12. Commitments & Contingent Liabilities Commitments & Contingent Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2019
Obligations and Funded Status [Abstract] |
Schedule of Net Benefit Costs [Table Text Block] | Components of Net Periodic Benefit Cost The following sets forth the net periodic benefit cost (income) for the periods indicated (in millions):
| 2019 | 2018 | 2017
Service costs | $6.9 | $7.5 | $6.5
Interest costs | 1.5 |  | 1.1 |  | 1.1 |
Expected returns on plan assets | (1.2 | ) | (1.1 | ) | (1.1 | )
Amortization of actuarial losses | 1.0 |  | 1.3 |  | 1.4 |
Amortization of prior service costs | — |  | 0.1 |  | — |
Settlements | 0.9 |  | — |  | 1.2 |
Net periodic benefit costs | $9.1 | $8.9 | $9.1
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: | 2019 | 2018
Benefit obligation at beginning of year | $137.3 | $136.6
Service cost | 6.9 |  | 7.5 |
Interest cost | 1.5 |  | 1.1 |
Plan participants' contributions | 3.5 |  | 3.1 |
Actuarial (gain) loss | 11.9 |  | (5.4 | )
Gross benefits paid | (2.1 | ) | (3.1 | )
Plan amendments | 0.2 |  | (0.5 | )
Settlements | (3.8 | ) | — |
Change attributable to foreign exchange | (1.6 | ) | (2.0 | )
Benefit obligation at end of year | 153.8 |  | 137.3 |
Change in plan assets: |  |
Fair value of plan assets at beginning year | 66.9 |  | 61.7 |
Actual return on plan assets | 0.9 |  | 0.3 |
Employer contributions | 4.7 |  | 4.0 |
Plan participants' contributions | 3.8 |  | 3.1 |
Gross benefits paid | (0.8 | ) | (1.5 | )
Settlements | (3.8 | ) | — |
Change attributable to foreign exchange | 0.6 |  | (0.7 | )
Fair value of plan assets at end of year | 72.3 |  | 66.9 |
Under funded status of plans | $(81.5) | $(70.4)
Amounts recognized in the consolidated balance sheets: |  |
Current liabilities (Accrued payroll and employee benefits) | $(1.1) | $(1.1)
Noncurrent liabilities (Other long-term liabilities) | (80.4 | ) | (69.3 | )
Net liability, end of fiscal year | $(81.5) | $(70.4)
Defined Benefit Plan, Assumptions [Table Text Block] | Assumptions The weighted-average assumptions used in computing the benefit obligations are as follows:
| 2019 | 2018
Discount rate | 0.5 | % | 1.1 | %
Compensation rate increase | 1.7 | % | 1.8 | %
The weighted-average assumptions used in computing the net periodic benefit costs are as follows:
| 2019 | 2018 | 2017
Discount rate | 1.1 | % | 0.8 | % | 0.9 | %
Expected long-term rate of return on plan assets | 1.8 | % | 1.8 | % | 1.9 | %

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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://fasb.org/us-gaap/role/ref/legacyRef -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=118255775&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of assumption used to determine benefit obligation and net periodic benefit cost of defined benefit plan. Includes, but is not limited to, discount rate, rate of compensation increase, expected long-term rate of return on plan assets and interest crediting rate. + 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 (k) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + 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 (h) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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