Employee Benefit Plans (Other Pension Assumptions) (Details)
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Dec. 31, 2012
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Dec. 31, 2011
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Defined Benefit Plan Disclosure [Line Items] | ||
Rate of compensation increase (average) | 4.00% | 4.00% |
Assumed health care cost trend rate Initial trend | 8.00% | 8.00% |
Assumed health care cost trend rate Ultimate trend | 5.00% | 5.00% |
Assumed health care cost trend rate Year ultimate reached | 2019 | 2019 |
Qualified Pension Plan [Member]
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Defined Benefit Plan Disclosure [Line Items] | ||
Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate | 3.80% | 4.60% |
Nonqualified Pension Plan [Member]
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Defined Benefit Plan Disclosure [Line Items] | ||
Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate | 3.45% | 4.20% |
Postretirement Benefits [Member]
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Defined Benefit Plan Disclosure [Line Items] | ||
Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate | 3.60% | 4.40% |