Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2016	Sep. 30, 2015
Statement of Financial Position [Abstract]
Receivables, Allowance for Uncollectible Accounts	$ 34,236	$ 29,029
Common Stock, Par Value	$ 1	$ 1
Common Stock, Shares Authorized	200,000,000	200,000,000
Common Stock, Shares Issued	84,892,747	84,594,383
Common Stock, Shares Outstanding	84,892,747	84,594,383