Summary of Significant Accounting Policies (Tables)

6 Months Ended

Mar. 31, 2015

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,
	2015	2014	2015	2014
Denominator (thousands of shares):
Average common shares outstanding for basic computation	173,154	172,760	173,055	172,494
Incremental shares issuable for stock options and awards	2,474	2,361	2,660	2,295
Average common shares outstanding for diluted computation	175,628	175,121	175,715	174,789