Income Taxes (Deferred Tax Assets And Deferred Tax Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Accounts receivable	$ 11,134	$ 12,454
Inventories	42,558	53,120
Employee benefits	70,989	58,461
Accrued expenses and other	54,652	62,287
Deductible state tax and interest benefit	491	7,067
Intangibles	34,003	62,079
Federal, foreign and state net operating losses and credits	458,743	432,906
Gross deferred tax assets	672,570	688,374
Valuation allowance	(287,580)	(300,472)
Net deferred tax assets	384,990	387,902
Inventories	(8,663)	(4,224)
Plant and equipment	(429,258)	(422,350)
Intangibles	(267,571)	(194,717)
Other liabilities	(30,256)	(19,564)
Gross deferred tax liabilities	(735,748)	(640,855)
Net deferred tax liability	$ (350,758)	$ (252,953)