Income Taxes (Components Of Net Deferred Income Tax Liability/Asset) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred income tax liabilities [Abstract]
Property, plant and equipment basis differences	$ 1,950,720	$ 1,959,028
Intangibles	885,661	929,749
Other, net	25,954	29,564
Gross deferred income tax liability	2,862,335	2,918,341
Deferred income tax assets [Abstract]
Pension liability	216,890	306,421
Tax operating loss carryforward	130,733	154,892
Employee benefits	161,493	177,464
State tax liability	(642)	7,422
Accrued expenses	26,223	43,162
Allowance for doubtful accounts	11,957	35,181
Other, net	42,915	14,025
Gross deferred income tax asset	589,569	738,567
Less: Valuation allowance	(112,671)	(78,784)
Net deferred income tax asset	476,898	659,783
Deferred tax assets and liabilities are reflected in the following captions on the consolidated balance sheet [Abstract]
Deferred income taxes	2,417,108	2,357,210
Income taxes and other current assets	(31,671)	(98,652)
Net deferred income tax liability	$ 2,385,437	$ 2,258,558