Employee Compensation Plans (Details 5) (USD $)	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 24, 2011
RSUs
Share Units
Nonvested at beginning of the period (in shares)	81,834
Granted (in shares)	175,789		0
Vested (in shares)	(34,761)
Forfeited (in shares)	(1,360)
Nonvested at end of the period (in shares)	221,502	81,834
Weighted Average Grant-Date Fair Value
Nonvested at beginning of the period (in dollars per shares)	$ 39.62
Granted (in dollars per shares)	$ 45.19	$ 39.73
Vested (in dollars per shares)	$ 47.22
Forfeited (in dollars per shares)	$ 54.12
Nonvested at end of the period (in dollars per shares)	$ 42.74	$ 39.62
Weighted average remaining contractual life of unvested awards	1 year 8 months 16 days	3 years 6 months 7 days
Intrinsic value of unvested awards	$ 16,586,000	$ 1,943,000
Awards expected to vest (in shares)	218,459
Intrinsic value of awards expected to vest	16,400,000
Total intrinsic value of awards converted to shares of common stock	2,200,000
Awards converted to shares of common stock		0
RSAs
Share Units
Granted (in shares)		55,432
Weighted Average Grant-Date Fair Value
Intrinsic value of unvested awards		1,300,000
Total intrinsic value of awards vested	$ 2,700,000
PSUs
Share Units
Granted (in shares)	122,719
Vested (in shares)	0
Forfeited (in shares)	(2,051)
Nonvested at end of the period (in shares)	120,668
Weighted Average Grant-Date Fair Value
Granted (in dollars per shares)	$ 41.28
Forfeited (in dollars per shares)	$ 51.56
Nonvested at end of the period (in dollars per shares)	$ 41.10
Awards converted to shares of common stock	0
Outstanding awards, at the threshold award level	96,534
Outstanding awards, at the maximum award level	144,802