Pension And Postretirement Benefits (Schedule Of Fair Value Of Company Pension Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	$ 874,590	$ 870,692
Quoted Prices In Active Markets For Identical Assets Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	163,863	162,020
Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	710,727	708,672
Cash and Money Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	18,796	19,425
Cash and Money Markets [Member] | Quoted Prices In Active Markets For Identical Assets Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	18,796	19,425
Common Stocks Actively Managed U.S. Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	145,067	142,595
Common Stocks Actively Managed U.S. Equities [Member] | Quoted Prices In Active Markets For Identical Assets Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	145,067	142,595
Fixed Income Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	46,065	26,449
Fixed Income Investments [Member] | Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	46,065	26,449
U.S. Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	100,782	103,606
U.S. Equity Funds [Member] | Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	100,782	103,606
Non-U.S. Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	202,609	220,794
Non-U.S. Equity Funds [Member] | Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	202,609	220,794
U.S. Fixed Income, Government and Corporate [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	11,498	32,720
U.S. Fixed Income, Government and Corporate [Member] | Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	11,498	32,720
U.S. Tactical Allocation Balanced Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	15,972	15,845
U.S. Tactical Allocation Balanced Fund [Member] | Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	15,972	15,845
Non-U.S. Fixed Income, Government And Corporate [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	177,548	141,407
Non-U.S. Fixed Income, Government And Corporate [Member] | Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	177,548	141,407
International Balanced Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	10,127	54,724
International Balanced Funds [Member] | Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	10,127	54,724
Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	90,307	72,053
Hedge Funds [Member] | Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	90,307	72,053
International Property Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	53,442	38,449
International Property Funds [Member] | Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	53,442	38,449
Commodities Fund [Member] [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	1,406	1,639
Commodities Fund [Member] [Member] | Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	1,406	1,639
Annuity Contract [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	971	986
Annuity Contract [Member] | Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value	$ 971	$ 986