Consolidated Statements of Total Equity Consolidated Statements of Total Equity (Parenthetical) - shares	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Beginning Balances, shares	368,431,454
Ending Balances, shares	366,273,190
Common Stock [Member]
Beginning Balances, shares	368,431,454	376,261,635
Exercise of stock options	258,800	806,817
Stock issued under employee benefit plans	582,936	273,608
Repurchases of common stock	(3,000,000)	(4,100,000)
Ending Balances, shares	366,273,190	373,242,060