Goodwill and Other Intangible Assets (Details 1) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Sep. 30, 2013
Other intangible assets
Amortized intangible assets, carrying amount	$ 382.1	$ 328.9
Amortized intangible assets, accumulated amortization	177.3	159.8
Amortized intangible assets, net	204.8	169.1
Intangible assets not subject to amortization	43.7	43.7
Total other intangible assets, carrying amount	425.8	372.6
Total other intangible assets, net	248.5	212.8
Goodwill and Other Intangible Assets (Textual) [Abstract]
Estimated amortization expense in 2014	30.9
Estimated amortization expense in 2015	31.7
Estimated amortization expense in 2016	30.1
Estimated amortization expense in 2017	26.8
Estimated amortization expense in 2018	19.0
Computer software products [Member]
Other intangible assets
Amortized intangible assets, carrying amount	156.2	146.9
Amortized intangible assets, accumulated amortization	79.0	73.1
Amortized intangible assets, net	77.2	73.8
Customer relationships [Member]
Other intangible assets
Amortized intangible assets, carrying amount	91.4	77.4
Amortized intangible assets, accumulated amortization	42.0	37.1
Amortized intangible assets, net	49.4	40.3
Technology [Member]
Other intangible assets
Amortized intangible assets, carrying amount	84.4	66.1
Amortized intangible assets, accumulated amortization	34.7	30.9
Amortized intangible assets, net	49.7	35.2
Trademarks [Member]
Other intangible assets
Amortized intangible assets, carrying amount	34.0	26.4
Amortized intangible assets, accumulated amortization	12.5	10.7
Amortized intangible assets, net	21.5	15.7
Other [Member]
Other intangible assets
Amortized intangible assets, carrying amount	16.1	12.1
Amortized intangible assets, accumulated amortization	9.1	8.0
Amortized intangible assets, net	$ 7.0	$ 4.1