Consolidated Statements of Total Equity Consolidated Statements of Total Equity (Parenthetical) - shares	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Beginning Balances, shares	376,261,635
Ending Balances, shares	373,242,060
Common Stock [Member]
Beginning Balances, shares	376,261,635	374,986,079
Issuances under employee benefit plans	0	0
Exercise of stock options	806,817	916,913
Stock issued under employee incentive plans	273,608	290,974
Repurchases of common stock	4,100,000	500,000
Ending Balances, shares	373,242,060	375,693,966