Income Taxes (Principal Components Of The Company's Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Income Tax Expense (Benefit) [Abstract]
Accruals not yet tax deductible	$ 118,434	$ 123,514
Pension and postretirement benefit plan obligations	227,593	219,071
Stock compensation	28,001	32,486
Net operating loss carryforward	32,276	28,914
Valuation allowance	(16,314)	(14,914)
Other, net	45,053	49,253
Deferred tax assets, net	435,043	438,324
Depreciation, tax in excess of book	(117,743)	(77,787)
Other	(34,602)	(25,767)
Deferred tax liabilities, net	(152,345)	(103,554)
Total	$ 282,698	$ 334,770