Stock-Based Compensation - Stock Option Activity (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 27, 2013	Sep. 27, 2013
Stock Option Activity [Abstract]
Options outstanding, Beginning Balance, Numbers of Shares	13.1	11.9
Granted, Number of Shares		1.6
Share Based Compensation Arrangement By Share Based Payment Award Options Assumed In Period	1.3	0.4
Exercised, Number of Shares	(1.6)	(0.7)
Options Canceled or Expired In Period	(0.3)	(0.1)
Options outstanding, Ending Balance, Numbers of Shares	12.5	13.1
Exercisable at December 27, 2013	4.8
Vested and expected to vest after December 27, 2013	12.3
Options outstanding, Beginning Balance, Weighted Average Exercise Price Per Share	$ 36.77	$ 29.47
Granted, Weighted Average Exercise Price Per Share		$ 68.40
Share Based Compensation Options Assumed Weighted Average Exercise Price	$ 12.32	$ 117.41
Exercised, Weighted Average Exercise Price Per Share	$ 25.34	$ 30.14
Canceled or expired, Weighted Average Exercise Price Per Share	$ 76.28	$ 29.93
Options outstanding, Ending Balance, Weighted Average Exercise Price Per Share	$ 34.99	$ 36.77
Exercisable at December 27, 2013, Weighted Average Exercise Price Per Share	$ 32.45
Vested and expected to vest after December 27, 2013, Weighted Average Exercise Price Per Share	$ 34.79
Options outstanding at December 27, 2013, Weighted Average Remaining Contractual Life (in years)	4 years 9 months
Exercisable at December 27, 2013, Weighted Average Remaining Contractual Life (in years)	3 years 2 months
Vested and expected to vest after December 27, 2013, Weighted Average Remaining Contractual Life (in years)	4 years 9 months
Options outstanding at December 27, 2013, Aggregate Intrinsic Value	$ 610
Exercisable at December 27, 2013, Aggregate Intrinsic Value	253
Vested and expected to vest after December 27, 2013, Aggregate Intrinsic Value	$ 602