Employee Compensation Plans (Details 2) (Stock Option, USD $)	12 Months Ended
	Sep. 29, 2012	Sep. 24, 2011	Sep. 25, 2010
Stock Option
Number of shares
Number of shares, outstanding, beginning balance	8,057,167
Number of Shares, Granted	410,282
Number of Shares, Exercised	(940,369)
Number of Shares, Forfeited/expired	(56,105)
Number of shares, outstanding, ending balance	7,470,975	8,057,167
Number of Shares, Exercisable	6,064,763
Weighted average exercise price (per share)
Weighted average exercise price, outstanding, begining balance	$ 9.81
Weighted Average Exercise Price, Granted	$ 49.33
Weighted Average Exercise Price, Exercised	$ 3.61
Weighted Average Exercise Price, Forfeited/expired	$ 33.09
Weighted average exercise price, outstanding, ending balance	$ 12.56	$ 9.81
Weighted Average Exercise Price, Exercisable	$ 7.01
Summary of stock options
Stock options vested and expected to vest, Number of options outstanding	7,459,238
Stock options vested and expected to vest, Weighted average remaining contractual life	5 years 3 months 14 days
Stock options vested and expected to vest, Weighted average exercise price	$ 12.50
Stock options vested and expected to vest, Intrinsic value	$ 112,697,000
Stock options exercisable, Number of options exercisable	6,064,763
Stock options exercisable, Weighted average remaining contractual life	4 years 8 months 1 day
Stock options exercisable, Weighted average exercise price	$ 7.01
Stock options exercisable, Intrinsic value	106,865,000
Unrecognized share-based compensation costs	21,100,000
Weighted average period for unrecognized cost, years	1 year 2 months 12 days
Intrinsic values of options exercised	$ 46,600,000	$ 221,800,000	$ 49,700,000