Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Sep. 30, 2019
Statement of Financial Position [Abstract]
Receivables, Allowance for Uncollectible Accounts	$ 29,627	$ 25,788
Common Stock, Par Value	$ 1	$ 1
Common Stock, Shares Authorized	200,000,000	200,000,000
Common Stock, Shares Issued	86,561,532	86,315,287
Common Stock, Shares Outstanding	86,561,532	86,315,287