Pension, Savings, And Other Employee Benefits (Schedule Of Fair Value Of Assets And Liabilities) (Details) (Pension Plan [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	$ 633,972	$ 575,790
Fair Value Inputs Level1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	77,825	77,964
Fair Value Inputs Level2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	556,147	497,826
Cash Equivalents And Money Market Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	10,198	7,653
Cash Equivalents And Money Market Funds [Member] \| Fair Value Inputs Level1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	10,198	7,653
Equity Securities [Member] \| U S Mid And Small Capital [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	67,263	69,466
Equity Securities [Member] \| U S Mid And Small Capital [Member] \| Fair Value Inputs Level1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	67,263	69,466
Mutual Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	364	845
Mutual Funds [Member] \| Fair Value Inputs Level1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	364	845
Fixed Income Securities Member \| U S Treasury Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	7,778	1,795
Fixed Income Securities Member \| U S Treasury Securities [Member] \| Fair Value Inputs Level2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	7,778	1,795
Fixed Income Securities Member \| ForeignCorporateDebtSecuritiesMember
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	180,309	148,376
Fixed Income Securities Member \| ForeignCorporateDebtSecuritiesMember \| Fair Value Inputs Level2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	180,309	148,376
Common And Collective Funds [Member] \| ForeignCorporateDebtSecuritiesMember
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	194,205	151,346
Common And Collective Funds [Member] \| ForeignCorporateDebtSecuritiesMember \| Fair Value Inputs Level2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	194,205	151,346
Common And Collective Funds [Member] \| U S Large Capital [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	112,311	133,030
Common And Collective Funds [Member] \| U S Large Capital [Member] \| Fair Value Inputs Level2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	112,311	133,030
Common And Collective Funds [Member] \| International [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	61,544	63,279
Common And Collective Funds [Member] \| International [Member] \| Fair Value Inputs Level2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of pension plan assets	$ 61,544	$ 63,279

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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