CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	3 Months Ended	12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025
Statement of Financial Position [Abstract]
Common stock, par value (usd per share)	$ 2.50	$ 2.50
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares outstanding (in shares)	100,750,110	100,478,590
CommonStockSharesIssuedNotDisclosed	true	true
Treasury stock at cost and other, shares (in shares)	18,922	17,273