Retirement Benefits (Weighted Average Actuarial Assumptions Utilized) (Details)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Pension Plan
Weighted average assumptions:
Discount rate (for expense)	3.07%	3.40%
Expected return on plan assets	5.83%	6.64%
Rate of compensation increase (for expense)	1.73%	1.77%
Discount rate (for benefit obligation)	3.48%	3.07%
Rate of compensation increase (for benefit obligation)	1.74%	1.73%
Postretirement Benefits
Weighted average assumptions:
Discount rate (for expense)	3.21%	3.64%
Expected return on plan assets	0.00%	0.00%
Rate of compensation increase (for expense)	0.00%	0.00%
Discount rate (for benefit obligation)	3.65%	3.21%
Rate of compensation increase (for benefit obligation)	0.00%	0.00%
United States \| Pension Plan
Weighted average assumptions:
Discount rate (for expense)	3.86%	4.58%
Expected return on plan assets	7.95%	7.95%
Discount rate (for benefit obligation)	4.45%	3.86%
United States \| Postretirement Benefits
Weighted average assumptions:
Discount rate (for expense)	3.67%	4.12%
Expected return on plan assets	0.00%	0.00%
Discount rate (for benefit obligation)	4.24%	3.67%
Foreign Plan \| Pension Plan
Weighted average assumptions:
Discount rate (for expense)	2.58%	2.69%
Expected return on plan assets	4.94%	6.07%
Rate of compensation increase (for expense)	2.80%	2.85%
Discount rate (for benefit obligation)	2.89%	2.58%
Rate of compensation increase (for benefit obligation)	2.82%	2.80%
Foreign Plan \| Postretirement Benefits
Weighted average assumptions:
Discount rate (for expense)	2.97%	3.42%
Expected return on plan assets	0.00%	0.00%
Rate of compensation increase (for expense)	0.00%	0.00%
Discount rate (for benefit obligation)	3.32%	2.97%
Rate of compensation increase (for benefit obligation)	0.00%	0.00%

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

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)(1)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(2)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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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

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI http://asc.fasb.org/extlink&oid=108410482&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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(2)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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