Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Sep. 30, 2018
Statement of Financial Position [Abstract]
Receivables, Allowance for Uncollectible Accounts	$ 30,234	$ 24,537
Common Stock, Par Value	$ 1	$ 1
Common Stock, Shares Authorized	200,000,000	200,000,000
Common Stock, Shares Issued	86,300,675	85,956,814
Common Stock, Shares Outstanding	86,300,675	85,956,814