Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2023	Sep. 30, 2022
Statement of Financial Position [Abstract]
Deferred Tax Assets, Valuation Allowance	$ 17.8	$ 17.9
Preferred Stock, Par or Stated Value Per Share	$ 0.10	$ 0.10
Preferred Stock, Shares Authorized	30,000,000	30,000,000
Preferred Stock, Shares Issued	0	0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,000,000,000	1,000,000,000
Common Stock, Shares, Issued	400,830,778	399,172,937
Common Stock, Shares, Outstanding	341,070,276	343,953,023
Treasury Stock, Common, Shares	59,760,502	55,219,914