v2.4.0.6
Income Taxes - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended
Mar. 30, 2013
Mar. 24, 2012
Mar. 24, 2011
Mar. 30, 2013
Mar. 24, 2012
Sep. 29, 2012
Income Tax Disclosure [Abstract]            
Company's effective tax rate 30.70% 31.30%   40.80% (4.00%)  
Valuation allowance $ 19,000,000     $ 19,000,000    
Gain recorded on Makena sale   12,424,000 84,500,000 53,884,000 12,424,000  
Net deferred tax liabilities 1,620,000,000     1,620,000,000   1,760,000,000
Gross unrecognized tax benefits, including interest 113,000,000     113,000,000    
Increase in gross unrecognized tax benefits       58,100,000    
Unrecognized tax benefit that would impact effective tax rate 59,500,000     59,500,000    
Temporary differences not affecting Company's effective tax rate 53,500,000     53,500,000    
Accrued interest, net of tax benefit       $ 2,200,000