Retirement Plans (Assumptions Used To Determine Our Benefit Obligations And Net Periodic Benefit Costs) (Details)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits
Compensation And Retirement Disclosure Line Items
Discount rate	4.10%	4.95%
Rate of increase in compensation levels	3.43%	3.70%
Weighted average used to determine net cost for the year ended, Discount rate	4.95%	4.22%	5.22%
Weighted average used to determine net cost for the year ended, expected long-term rate of return on assets	8.16%	8.14%	8.24%
Weighed average rate of increase in compensation levels	3.78%	3.79%	3.77%
Other Postretirement Benefit Plans, Defined Benefit
Compensation And Retirement Disclosure Line Items
Discount rate	4.03%	4.74%
Trend rate for next year	7.00%	8.00%
Ultimate trend rate	5.00%	5.00%
Year rate reaches ultimate trend rate	2024	2019
Weighted average used to determine net cost for the year ended, Discount rate	4.74%	3.97%	5.13%
Weighted average used to determine net cost for the year ended, expected long-term rate of return on assets	8.03%	8.03%	8.03%

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

+ References

+ Details

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- Definition

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

+ References

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- Definition

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

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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

-Topic 715

-SubTopic 30

-Glossary Expected Long-Term Rate of Return on Plan Assets

-URI http://asc.fasb.org/extlink&oid=6512013

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=35743120&loc=d3e1928-114920

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- Definition

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

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- Definition

The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

+ 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 (l)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Health Care Cost Trend Rate

-URI http://asc.fasb.org/extlink&oid=6514820

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- Definition

The ultimate trend rate for health care costs.

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- Definition

Year the ultimate health care cost trend rate is expected to be reached, in CCYY format.

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