| **Employee Retirement Benefits (Weighted-Average Assumptions Used) (Details)** | 12 Months Ended |
|--------------------------------------------------------------------------------|-----------------|
||
| Benefit Obligations | Pension Plan                                             |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Discount rate                                                                  | 4.55%           | 4.25% |   |
| Benefit Obligations | Pension Plan | Minimum                                   |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Rate of compensation increase                                                  | 2.75%           | 2.75% |   |
| Benefit Obligations | Pension Plan | Maximum                                   |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Rate of compensation increase                                                  | 3.25%           | 3.25% |   |
| Benefit Obligations | Supplemental Employee Retirement Plan                    |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Discount rate                                                                  | 4.30%           | 4.05% |   |
| Benefit Obligations | Supplemental Employee Retirement Plan | Minimum          |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Rate of compensation increase                                                  | 2.75%           | 2.75% |   |
| Benefit Obligations | Supplemental Employee Retirement Plan | Maximum          |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Rate of compensation increase                                                  | 3.25%           | 3.25% |   |
| Net Periodic Benefit Cost | Pension Plan                                       |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Discount rate                                                                  | 4.25%           | 5.15% | 4.20% |
| Expected return on plan assets                                                 | 7.25%           | 7.25% | 7.50% |
| Net Periodic Benefit Cost | Pension Plan | Minimum                             |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Rate of compensation increase                                                  | 2.75%           | 2.75% | 2.75% |
| Net Periodic Benefit Cost | Pension Plan | Maximum                             |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Rate of compensation increase                                                  | 3.25%           | 3.25% | 3.25% |
| Net Periodic Benefit Cost | Supplemental Employee Retirement Plan              |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Discount rate                                                                  | 4.05%           | 4.80% | 3.95% |
| Net Periodic Benefit Cost | Supplemental Employee Retirement Plan | Minimum    |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Rate of compensation increase                                                  | 2.75%           | 2.75% | 2.75% |
| Net Periodic Benefit Cost | Supplemental Employee Retirement Plan | Maximum    |            |   |   |
| **Schedule of Benefit Obligations Weighted Average Assumptions**               |            |   |   |
| Rate of compensation increase                                                  | 3.25%           | 3.25% | 3.25% |

| X                                                                                                                                                                                                                                                                                                                          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Schedule of Benefit Obligations Weighted Average Assumptions [Line Items]
+ References
No definition available.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The interest rate used to adjust for the time value of money.
+ 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=35743120&loc=d3e1928-114920
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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=6512013Reference 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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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Expected rate of compensation increases (for pay-related plans).
+ References
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