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Restructuring and Impairment Charges - Additional Information (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 29, 2014
Mar. 30, 2013
Mar. 29, 2014
Mar. 30, 2013
Restructuring and Related Activities [Abstract]        
Restructuring and impairment charges $ 48 $ 61 $ 67 $ 61