Employee Benefit Plans (Weighted-Average Assumptions used to Determine Net Benefit Cost) (Details)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Pension Plans [Member]
Rate of return on assets	5.12%
Postretirement Benefits [Member]
Discount rate	5.33%	4.50%	4.20%
Domestic Plan [Member] \| Defined Benefit Pension Plans [Member]
Discount rate	3.67%	4.19%	3.83%
Rate of compensation increase	4.00%	4.00%	4.00%
Rate of return on assets		7.00%	7.25%
Foreign Plan [Member] \| Defined Benefit Pension Plans [Member]
Discount rate	2.69%	3.58%	3.27%
Rate of compensation increase	2.79%	2.94%	3.20%
Rate of return on assets	5.09%	6.40%	6.55%
U.S. Qualified Pension Plan [Member]
Rate of return on assets	5.50%

Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.

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

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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

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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

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