CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares	Dec. 31, 2019	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)	95,508,009.546	89,998,788
Treasury stock at cost and other, shares (in shares)	580,602.908	660,734