CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01
Preferred stock, shares authorized	10,000,000
Preferred stock, shares outstanding	0	394,300
Aggregate liquidation preference	$ 0.0	$ 617.1
Common Stock, Par or Stated Value Per Share	$ 0.01
Common stock, shares authorized	500,000,000
Common stock, shares issued	200,789,100.00	201,383,800
Common stock, shares outstanding	200,789,100.00	201,383,800