Earnings Per Share and Certain Related Information (Details)	3 Months Ended
	Dec. 28, 2012	Dec. 30, 2011
Shares used to calculate EPS:
Weighted average shares outstanding (denominator used to compute basic EPS)	128,644,000	126,921,000
Effect of stock options and restricted stock	1,025,000	1,166,000
Denominator used to compute diluted EPS	129,669,000	128,087,000
Antidilutive stock options and restricted stock	4,737,000	4,642,000
Shares of common stock issued from the exercise of stock options and the release of restricted stock	408,900	560,900