Goodwill and Other Intangible Assets (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 41.4	$ 11.1
Other intangible assets
Amortized intangible assets, carrying amount	392.1	328.9
Amortized intangible assets, accumulated amortization	189.6	159.8
Amortized intangible assets, net	202.5	169.1
Intangible asset amortization expense	30.0	31.4	34.7
Intangible assets not subject to amortization	43.7	43.7
Total other intangible assets, carrying amount	435.8	372.6
Total other intangible assets, net	246.2	212.8
Goodwill and Other Intangible Assets (Textuals) [Abstract]
Estimated amortization expense in 2015	30.7
Estimated amortization expense in 2016	34.1
Estimated amortization expense in 2017	30.0
Estimated amortization expense in 2018	23.9
Estimated amortization expense in 2019	18.0
Computer software products [Member]
Other intangible assets
Amortized intangible assets, carrying amount	169.1	146.9
Amortized intangible assets, accumulated amortization	82.5	73.1
Amortized intangible assets, net	86.6	73.8
Intangible asset amortization expense	9.4	13.1	15.9
Customer relationships [Member]
Other intangible assets
Amortized intangible assets, carrying amount	89.8	77.4
Amortized intangible assets, accumulated amortization	45.4	37.1
Amortized intangible assets, net	44.4	40.3
Technology-Based Intangible Assets [Member]
Other intangible assets
Amortized intangible assets, carrying amount	84.0	66.1
Amortized intangible assets, accumulated amortization	38.2	30.9
Amortized intangible assets, net	45.8	35.2
Trademarks [Member]
Other intangible assets
Amortized intangible assets, carrying amount	33.7	26.4
Amortized intangible assets, accumulated amortization	14.0	10.7
Amortized intangible assets, net	19.7	15.7
Other [Member]
Other intangible assets
Amortized intangible assets, carrying amount	15.5	12.1
Amortized intangible assets, accumulated amortization	9.5	8.0
Amortized intangible assets, net	$ 6.0	$ 4.1