Significant Accounting Policies (Details) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2011
Shares used in computing basic and diluted earnings per share
Average common shares outstanding for basic computation	114,598	114,240	113,709	113,136	112,868	112,726	112,510	112,240	113,923	[1]	112,581	[1]	111,674
Incremental shares issuable for stock options and common stock awards									1,598	[1]	851	[1]	1,270	[1]
Average common shares outstanding for diluted computation	114,598	116,196	115,199	114,490	112,868	113,504	113,239	113,152	115,521	[1]	113,432	[1]	112,944

[1] For Fiscal 2013, Fiscal 2012 and Fiscal 2011, there were approximately 88 shares, 81 shares and 3,700 shares, respectively, associated with outstanding stock option awards that were not included in the computation of diluted earnings per share above because their effect was antidilutive.