Retirement Benefits (Weighted-Average Assumptions Used In Calculating The Benefit Obligations For All Plans) (Details)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.92%	3.66%
Rate of compensation increase	3.00%	3.00%
Expected rate of return on plan assets	7.84%	7.62%
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.01%	3.74%
Rate of compensation increase	3.00%	3.00%
Expected rate of return on plan assets	7.00%	7.00%

Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Of Expected Rate Of Return On Plan Assets

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- Definition

The interest rate used to adjust for the time value of money for the 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=58740216&loc=d3e1928-114920

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- Definition

Expected rate of compensation increases (for pay-related plans).

+ 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=58740216&loc=d3e1928-114920

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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