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Income Taxes (Deferred Tax Assets And Deferred Tax Liabilities) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
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Income Tax Disclosure [Abstract] |  |  |  |  |
Accounts receivable | $ 17,346 |  | $ 12,289 |  |
Inventories | 50,423 |  | 38,801 |  |
Employee benefits | 55,479 |  | 53,519 |  |
Accrued expenses and other | 72,582 |  | 44,289 |  |
Deductible state tax and interest benefit | 7,927 |  | 13,119 |  |
Intangibles | 92,164 |  | 113,282 |  |
Federal, foreign and state net operating losses and credits | 438,272 |  | 247,786 |  |
Gross deferred tax assets | 734,193 |  | 523,085 |  |
Valuation allowance | (375,859) |  | (321,585) |  | (334,215)
Net deferred tax assets | 358,334 |  | 201,500 |  |
Inventories | (11,140) |  | (8,106) |  |
Plant and equipment | (413,989) |  | (277,324) |  |
Intangibles | (208,159) |  | (128,433) |  |
Other liabilities | (25,387) |  | (7,854) |  |
Gross deferred tax liabilities | (658,675) |  | (421,717) |  |
Net deferred tax liability | (300,341) | [1] | (220,217) | [1] |
Non-current deferred tax assets | 9,183 |  | 4,317 |  |
Current deferred tax liabilities | $ 11,235 |  | $ 6,309 |  |
[1] | This amount includes $9,183 and $4,317 of non-current deferred tax assets which are in deferred income taxes and other non-current assets and $11,235 and $6,309 current deferred tax liabilities which are included in accounts payable and accrued expenses in the consolidated balance sheets as of December 31, 2013 and 2012, respectively.

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