Shareholders' Equity - Additional Information (Detail) (USD $) In Billions, except Share data in Millions, unless otherwise specified	1 Months Ended	3 Months Ended	12 Months Ended		1 Months Ended	3 Months Ended	12 Months Ended	9 Months Ended
	Apr. 30, 2013	Dec. 28, 2013	Sep. 28, 2013	Sep. 29, 2012	Apr. 30, 2013 ASR 1	Dec. 29, 2012 ASR 1	Sep. 28, 2013 ASR 1	Jun. 29, 2013 ASR 2
Stockholders Equity Note Disclosure [Line Items]
Preferred stock, shares authorized		5
Maximum amount authorized for repurchase of common stock				$ 10
New amount authorized for repurchase of common stock	60
Accelerated share repurchase program, utilized amount		28.0
Shares repurchased and retired		9.5			1.5	2.6	4.1	23.5
Accelerated share repurchase program, up-front payment						1.95		12.00
Shares repurchase program completion date			April 2013
Shares repurchase price per share							$ 478.20
Shares retired, average price		$ 523.51
Shares retired Amount		$ 5.0