Shareholders' Equity (Details 2) (USD $) Share data in Millions, unless otherwise specified	12 Months Ended			1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 24, 2010	Apr. 30, 2011 2011 share repurchase program	Sep. 28, 2012 2011 share repurchase program	Sep. 30, 2011 2011 share repurchase program	Sep. 30, 2010 2010 share repurchase program	Sep. 30, 2011 2010 share repurchase program	Jul. 31, 2008 2008 share repurchase program	Sep. 24, 2010 2008 share repurchase program	Sep. 24, 2008 2008 share repurchase program
Share repurchase program
Authorized amount under share repurchase program				$ 1,000,000,000			$ 1,000,000,000		$ 1,000,000,000
Repurchase of common shares held in treasury, shares					11.0	6.0		24.0		24.3	2.5
Repurchase of common shares under share repurchase program (in dollars)	500,000,000	1,300,000,000	900,000,000		500,000,000	300,000,000		1,000,000,000		900,000,000	100,000,000
Remaining Amount Available					$ 200,000,000