Quarterly Results (Unaudited) Additonal Information (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Quarterly Financial Information Disclosure [Abstract]
Net consumer and other product sales									$ 4,449.2	$ 4,085.6	$ 3,252.4
Total revenues	1,512.4	1,599.4	1,341.2	1,510.0	1,498.6	1,410.6	1,411.9	1,222.3
Operating income	144.9	229.1	16.2	179.3	205.4	182.6	134.0	215.4	569.5	737.4	409.5
Net (loss) income attributable to common and participating preferred stockholders	$ (6.3)	$ 49.0	$ (87.6)	$ (39.0)	$ (202.3)	$ 91.6	$ (45.5)	$ 62.0	$ (83.9)	$ (94.2)	$ 29.9
Basic (in dollars per share)	$ (0.03)	$ 0.28	$ (0.63)	$ (0.28)	$ (1.45)	$ 0.45	$ (0.33)	$ 0.31	$ (0.51)	$ (0.67)	$ 0.15
Earnings Per Share, Diluted	$ (0.03)	$ 0.28	$ (0.63)	$ (0.28)	$ (1.45)	$ 0.25	$ (0.33)	$ 0.03	$ (0.51)	$ (0.67)	$ 0.15