Employee Benefit Plans (Assumptions On A Weighted Average Basis, Used In Accounting For Plans) (Details)	12 Months Ended
Dec. 31, 2016 Rate	Dec. 31, 2015 Rate	Dec. 31, 2014 Rate
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Determination of benefit obligation at year end, Discount rate	4.05%	4.15%	3.95%
Determination of benefit obligation at year end, Assumed credit on cash balance accounts	5.00%	5.00%	5.00%
Determination of net periodic benefit cost for year ended, Discount rate	4.16%	3.95%	4.55%
Determination of net periodic benefit cost for year ended, Long-term rate of return on assets	6.00%	6.00%	6.00%
Determination of net periodic benefit cost for year ended, Assumed credit on cash balance accounts	5.00%	5.00%	5.00%

Defined benefit plan assumptions used calculating benefit obligation, assumed credit on cash balance accounts.

No definition available.

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- Definition

Defined benefit plan assumptions used calculating net periodic benefit cost assumed credit on cash balance accounts.

+ References

No definition available.

+ Details

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- References

No definition available.

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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=65897934&loc=d3e1928-114920

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- Definition

The interest rate used to adjust for the time value of money.

+ References

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Long-Term Rate of Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512046

Reference 2: 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=65897934&loc=d3e1928-114920

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