Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Millions	Dec. 31, 2019	Sep. 30, 2019
ASSETS
Valuation allowance for deferred income taxes	$ 18.3	$ 18.7
Preferred Stock, Par or Stated Value Per Share	$ 0.1	$ 0.1
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	393,014,557	392,172,821
Common Stock, Shares, Outstanding	366,273,190	368,431,454
EQUITY
Treasury Stock, Shares	26,741,367	23,741,367

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