Significant Accounting Policies (Tables)

6 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

Shares used in computing basic and diluted earnings per share

Shares used in computing basic and diluted earnings per share are as follows:

	Three Months Ended March 31,		Six Months Ended March 31,
	2013	2012	2013	2012
Denominator (thousands of shares):
Average common shares outstanding for basic computation	113,709	112,510	113,416	112,380
Incremental shares issuable for stock options and awards	1,490	729	1,413	705
Average common shares outstanding for diluted computation	115,199	113,239	114,829	113,085