Supplemental Information (Other Noncurrent Assets) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Supplemental Information [Abstract]
Derivative instruments	$ 65.1	$ 64.1
Other long-term receivables	35.1	38.2
Deferred financing cost, net	25.5	27.0
Prepaid taxes	31.3	34.1
Deferred tax assets	56.6	53.1
Pension benefits	22.9	20.5
Deposits	51.0	8.7
Other	138.8	147.8
Other noncurrent assets total	$ 426.3	$ 393.5