Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Expense (Benefit) [Abstract]

Provision For Income Taxes

	2012			2011			2010
Current:
Federal	$	191,006		$	135,232		$	138,221
State	4,221			12,177			6,919
Foreign	13,189			5,776			4,486
	208,416			153,185			149,626
Deferred:
Federal	121,934			104,723			(18,428		)
State	7,697			(12,201		)	(1,361		)
Foreign	(460		)	(1,121		)	963
	129,171			91,401			(18,826		)
Total	$	337,587		$	244,586		$	130,800

Components Of Income Before Taxes

	2012		2011		2010
Domestic	$	946,592	$	782,896	$	377,416
Foreign	14,920		9,768		13,053
	$	961,512	$	792,664	$	390,469

Provision For Income Tax Rate To Statutory Rate Reconciliation

	2012		2011		2010
Provision at statutory rate	35.0	%	35.0	%	35.0	%
State taxes, net of federal benefit	1.6		1.6		1.0
Domestic manufacturing deduction	(1.6	)	(1.8	)	(3.2	)
Research and development credit	—		(0.6	)	(1.0	)
Unrecognized tax benefits including interest and penalties	0.1		(1.1	)	(0.2	)
Valuation allowance adjustments	(0.3	)	(2.0	)	0.7
Medicare Part D	—		—		3.4
Tax audit settlements	(0.1	)	(1.1	)	(0.4	)
Investments in low-income housing partnerships	—		—		0.6
Adjustments for previously accrued taxes	(0.4	)	0.3		(2.8	)
Other	0.8		0.6		0.4
Provision for income taxes	35.1	%	30.9	%	33.5	%

Principal Components Of The Company's Deferred Tax Assets And Liabilities

	2012			2011
Deferred tax assets:
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
	435,043			438,324
Deferred tax liabilities:
Depreciation, tax in excess of book	(117,743		)	(77,787		)
Other	(34,602		)	(25,767		)
	(152,345		)	(103,554		)
Total	$	282,698		$	334,770

Changes In Gross Liability For Unrecognized Tax Benefits Excluding Interest And Penalties

	2012			2011
Unrecognized tax benefits, beginning of period	$	57,137		$	69,805
Increase in unrecognized tax benefits for tax positions taken in a prior period	1,806			13,745
Decrease in unrecognized tax benefits for tax positions taken in a prior period	(6,439		)	(21,574		)
Increase in unrecognized tax benefits for tax positions taken in the current period	3,737			3,036
Statute lapses	(415		)	(2,249		)
Settlements with taxing authorities	(7,074		)	(5,626		)
Unrecognized tax benefits, end of period	$	48,752		$	57,137