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Employee Benefit Plan - Actuarial Assumptions (Details) - Non-U.S. Plan | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Minimum |  |
Actuarial assumptions, benefit obligation |  |
Discount rate, benefit obligation | 0.70% | 0.70%
Inflation, benefit obligation | 1.00% | 1.00%
Expected return on plan assets, benefit obligation | 1.30% | 1.30%
Rate of salary increases, benefit obligation | 2.00% | 2.00%
Actuarial assumptions, net periodic cost |  |
Discount rate, net periodic benefit cost | 0.70% | 0.70%
Inflation rate, net period benefit cost | 1.00% | 1.00%
Expected return on plan assets | 1.30% | 1.30%
Rate of salary increases, net periodic benefit cost | 2.00% | 2.00%
Maximum |  |
Actuarial assumptions, benefit obligation |  |
Discount rate, benefit obligation | 1.50% | 1.60%
Inflation, benefit obligation | 1.80% | 1.80%
Expected return on plan assets, benefit obligation | 2.00% | 2.00%
Rate of salary increases, benefit obligation | 2.80% | 2.80%
Actuarial assumptions, net periodic cost |  |
Discount rate, net periodic benefit cost | 1.50% | 1.60%
Inflation rate, net period benefit cost | 1.80% | 1.80%
Expected return on plan assets | 2.00% | 2.00%
Rate of salary increases, net periodic benefit cost | 2.80% | 2.80%

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit 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 (k)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit 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 (k)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit 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 (k)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit 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 (k)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit 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 (k)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine benefit obligation of defined benefit plan. + References No definition available. + Details
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- Definition Defined benefit plan assumptions used calculating benefit obligation inflation rate. + References No definition available. + Details
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