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Income Taxes Net deferred tax asset (liability) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Deferred Tax Assets [Abstract]    
Non-deductible reserves and other $ 446,605 $ 312,186
Inventory valuation reserves 1,197,271 1,449,261
Net operating loss carryforwards [Abstract]    
Federal 663,733 592,345
State 299,292 287,458
Alternative minimum tax credits 25,193 25,193
Energy credit and charitable contribution carryforward 38,586 36,045
Deferred Tax Assets, Gross 2,670,680 2,702,488
Deferred Tax Liabilities [Abstract]    
Capitalized items, including real estate basis differences, deducted for tax, net (91,399) (64,130)
Trademarks and tradenames (61,692) (66,671)
Deferred Tax Liabilities (153,091) (130,801)
Valuation allowance (2,517,589) (2,571,687)
Net deferred tax asset (liability) $ 0 $ 0