v2.4.0.8
Borrowings and Credit Arrangements - Convertible Notes and Related Equity Components (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 28, 2013
Sep. 29, 2012
2007 Notes [Member]
   
Schedule Of Borrowings [Line Items]    
Notes principal amount $ 405,000 $ 775,000
Unamortized discount (4,867) (50,591)
Net carrying amount 400,133 724,409
Equity component, net of taxes 121,496 233,353
2010 Notes [Member]
   
Schedule Of Borrowings [Line Items]    
Notes principal amount 450,000 450,000
Unamortized discount (58,310) (74,062)
Net carrying amount 391,690 375,938
Equity component, net of taxes 60,054 60,054
2012 Notes [Member]
   
Schedule Of Borrowings [Line Items]    
Notes principal amount 500,000 500,000
Unamortized discount (34,630) (41,687)
Net carrying amount 465,370 458,313
Equity component, net of taxes 49,195 49,195
2013 Notes [Member]
   
Schedule Of Borrowings [Line Items]    
Notes principal amount 370,000  
Principal accretion 9,225  
Unamortized discount (48,293)  
Net carrying amount 330,932  
Equity component, net of taxes $ 131,451