Consolidated Statements of Total Equity (Parenthetical) - shares	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Increase (Decrease) in Stockholders' Equity
Beginning Balances,shares	364,586,694
Issuances under employee benefit plans, shares	82,446	77,216	63,105
Exercise of stock options, shares	3,636,655	2,687,724	1,785,412
Debt Conversion, Converted Instrument, Shares Issued		38,589,451
Ending Balances, shares	368,647,371	364,586,694
Common Stock
Increase (Decrease) in Stockholders' Equity
Beginning Balances,shares	364,586,694	322,943,618	320,891,976
Issuances under employee benefit plans, shares	82,446	77,216	63,105
Exercise of stock options, shares	3,636,655	2,687,724	1,785,412
Issuance under Performance Unit Plan, shares	341,576	288,685	203,125
Ending Balances, shares	368,647,371	364,586,694	322,943,618