CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2020	Sep. 30, 2019
Statement of Financial Position [Abstract]
Common stock, par value (usd per share)	$ 2.5	$ 2.5
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares outstanding (in shares)	95,643,185	89,998,788
Treasury stock at cost and other, shares (in shares)	445,734	660,734