Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Sep. 30, 2020
Statement of Financial Position [Abstract]
Receivables, Allowance for Uncollectible Accounts	$ 30,128	$ 22,810
Common Stock, Par Value	$ 1	$ 1
Common Stock, Shares Authorized	200,000,000	200,000,000
Common Stock, Shares Issued	91,163,797	90,954,696
Common Stock, Shares Outstanding	91,163,797	90,954,696