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Retirement Plans (Details 12) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
U. S. Pension Plans And U. S. Retiree Healthcare Plan [Member] |  |  |
Weighted-Average Assumptions Used in Calculating Benefit Obligation [Abstract] |  |  |
Discount rate assumptions used in calculating projected benefit obligation | 3.94% | 4.41% | 4.59%
Weighted-Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |
Discount rate assumptions used in calculating net periodic pension cost | 4.28% | 4.42% | 3.71%
Return on assets assumptions used in calculating net periodic pension cost | 6.53% | 6.47% | 6.35%
Non-U.S. Pension Plans |  |  |
Weighted-Average Assumptions Used in Calculating Benefit Obligation [Abstract] |  |  |
Discount rate assumptions used in calculating projected benefit obligation | 1.79% | 1.71% | 2.23%
Rate of compensation increase assumptions used in calculating projected benefit obligation | 2.43% | 2.47% | 2.45%
Weighted-Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |
Discount rate assumptions used in calculating net periodic pension cost | 1.80% | 2.20% | 1.98%
Return on assets assumptions used in calculating net periodic pension cost | 2.64% | 2.74% | 2.58%
Rate of compensation increase assumptions used in calculating net periodic pension cost | 2.63% | 2.50% | 2.57%
Waters Retirement Plan [Member] |  |  |
Weighted-Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] |  |  |
Effect of one-quarter percentage point increase in discount rate on net periodic benefit cost | less than $1 million |  |
Effect of one-quarter percentage point increase in return on assets on net periodic benefit cost | less than $1 million |  |

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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 The effect of a one-quarter-percentage-point increase in the assumed discount rate on the net periodic benefit cost. (For purposes of this disclosure, all other assumptions shall be held constant, and the effects shall be measured based on the substantive plan that is the basis for the accounting.) + References No definition available. + Details
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- Definition The effect of a one-quarter-percentage-point increase in the assumed return on assets on the net periodic benefit cost. (For purposes of this disclosure, all other assumptions shall be held constant, and the effects shall be measured based on the substantive plan that is the basis for the accounting.) + References No definition available. + Details
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