Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Total Income Taxes

	2011			2010			2009
	(Amounts are in thousands)
Earnings	$	769,807			701,271			613,272
Other comprehensive (losses) earnings		(5,015	)		(3,135	)		35,159
	$	764,792			698,136			648,431

Provision For Income Taxes

	Current		Deferred			Total
	(Amounts are in thousands)
2011
Federal	$	592,275		90,486			682,761
State		81,684		5,362			87,046
	$	673,959		95,848			769,807
2010
Federal	$	601,098		23,778			624,876
State		79,451		(3,056	)		76,395
	$	680,549		20,722			701,271
2009
Federal	$	518,269		28,064			546,333
State		67,985		(1,046	)		66,939
	$	586,254		27,018			613,272

Reconciliation Of Income Taxes

	2011			2010			2009
	(Amounts are in thousands)
Federal tax at statutory tax rate	$	791,621			713,796			621,150
State income taxes (net of federal tax benefit)		56,580			49,657			43,511
ESOP dividend		(46,675	)		(40,718	)		(36,033	)
Other, net		(31,719	)		(21,464	)		(15,356	)
	$	769,807			701,271			613,272

Deferred Tax Assets And Liabilities

	2011		2010
	(Amounts are in thousands)
Deferred tax assets:
Self-insurance reserves	$	114,522		113,557
Retirement plan contributions		48,825		44,686
Postretirement benefit cost		41,515		36,551
Reserves not currently deductible		18,047		24,731
Inventory capitalization		11,687		12,650
Advance purchase allowances		6,454		7,768
Other		4,357		9,378
Total deferred tax assets	$	245,407		249,321
Deferred tax liabilities:
Property, plant and equipment, primarily due to depreciation	$	491,485		409,736
Other		11,324		6,154
Total deferred tax liabilities	$	502,809		415,890