Condensed Consolidated Statements of Changes in Equity (unaudited) - USD ($) $ in Millions	Total	Parent	Common Stock, Without Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interests
Balance, beginning of period at Sep. 30, 2013			$ 1,208.1	$ 1,308.3	$ 8.4	$ (32.3)	$ 1,055.4
Increase (Decrease) in Stockholders' Equity
Common Stock issued in connection with employee and director plans (including (losses) gains on treasury stock transactions), net of tax withheld			(9.6)
Excess tax benefits realized on equity-based compensation			8.4
Equity-based compensation expense			9.1
Loss from acquisition of noncontrolling interests through business combination			0.0
Net (loss) income	$ 592.6			357.0			235.6
Cash dividends on Common Stock				(98.6)
Net gains on derivative instruments, net of tax	46.2				12.3
Reclassification of net losses (gains) on derivative instruments, net of tax	(46.7)				(7.6)
Benefit plans, net of tax	0.8				0.8
Foreign currency, net of tax	11.5				11.5
Common stock issued in connection with employee and director plans, net of tax withheld						46.7
Repurchases of Common Stock						(21.4)
Reacquired common stock - employee and director plans						(30.1)
Net gains on derivative instruments							33.9
Reclassification of net gains on derivative instruments							(39.1)
Dividends and distributions							(176.9)
Change in noncontrolling interests as a result of business combination							0.0
Other							0.9
Balance, end of period at Jun. 30, 2014	3,880.8	$ 2,771.0	1,216.0	1,566.7	25.4	(37.1)	1,109.8
Balance, beginning of period at Sep. 30, 2014	3,663.2		1,215.6	1,509.4	(21.2)	(44.7)	1,004.1
Increase (Decrease) in Stockholders' Equity
Common Stock issued in connection with employee and director plans (including (losses) gains on treasury stock transactions), net of tax withheld			(18.6)
Excess tax benefits realized on equity-based compensation			6.3
Equity-based compensation expense			11.7
Loss from acquisition of noncontrolling interests through business combination			(6.6)
Net (loss) income	466.5			290.2			176.3
Cash dividends on Common Stock				(114.3)
Net gains on derivative instruments, net of tax	23.1				23.1
Reclassification of net losses (gains) on derivative instruments, net of tax	0.7				2.5
Benefit plans, net of tax	1.4				1.4
Foreign currency, net of tax	(118.0)				(118.0)
Common stock issued in connection with employee and director plans, net of tax withheld						33.2
Repurchases of Common Stock						(17.3)
Reacquired common stock - employee and director plans						(4.2)
Net gains on derivative instruments							0.0
Reclassification of net gains on derivative instruments							(1.8)
Dividends and distributions							(185.8)
Change in noncontrolling interests as a result of business combination							(5.2)
Other							(0.5)
Balance, end of period at Jun. 30, 2015	$ 3,735.6	$ 2,748.5	$ 1,208.4	$ 1,685.3	$ (112.2)	$ (33.0)	$ 987.1