Earnings per Share (Tables)

12 Months Ended

Sep. 30, 2011

Earnings per Share [Abstract]

Weighted average common shares used in the computations of basic and diluted earnings per share

	2011		2010		2009
Average common shares outstanding		221,175		234,328		240,479
Dilutive share equivalents from share-based plans		5,105		5,808		6,319
Average common and common equivalent shares outstanding — assuming dilution		226,280		240,136		246,798