Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 28, 2013	Dec. 29, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Business acquisitions, aggregate cash consideration paid, net of cash acquired	$ 525	$ 284
Business acquisitions allocated to goodwill	440
Business acquisitions allocated to intangible assets	156
Business acquisitions allocated to net liabilities assumed	$ 71
Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized acquired intangible assets with definite lives useful period (in years)	3 years
Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized acquired intangible assets with definite lives useful period (in years)	7 years