Goodwill and Other Intangible Assets (Details 1) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014
Other intangible assets
Amortized intangible assets, carrying amount	$ 399.0	$ 392.1
Amortized intangible assets, accumulated amortization	195.8	189.6
Amortized intangible assets, net	203.2	202.5
Intangible assets not subject to amortization	43.7	43.7
Total other intangible assets, carrying amount	442.7	435.8
Total other intangible assets, net	246.9	246.2
Goodwill and Other Intangible Assets (Textual) [Abstract]
Estimated amortization expense in 2015	28.9
Estimated amortization expense in 2016	30.5
Estimated amortization expense in 2017	26.4
Estimated amortization expense in 2018	20.3
Estimated amortization expense in 2019	16.9
Computer software products [Member]
Other intangible assets
Amortized intangible assets, carrying amount	181.9	169.1
Amortized intangible assets, accumulated amortization	86.0	82.5
Amortized intangible assets, net	95.9	86.6
Customer relationships [Member]
Other intangible assets
Amortized intangible assets, carrying amount	87.6	89.8
Amortized intangible assets, accumulated amortization	45.9	45.4
Amortized intangible assets, net	41.7	44.4
Technology [Member]
Other intangible assets
Amortized intangible assets, carrying amount	83.0	84.0
Amortized intangible assets, accumulated amortization	40.2	38.2
Amortized intangible assets, net	42.8	45.8
Trademarks [Member]
Other intangible assets
Amortized intangible assets, carrying amount	31.8	33.7
Amortized intangible assets, accumulated amortization	14.4	14.0
Amortized intangible assets, net	17.4	19.7
Other [Member]
Other intangible assets
Amortized intangible assets, carrying amount	14.7	15.5
Amortized intangible assets, accumulated amortization	9.3	9.5
Amortized intangible assets, net	$ 5.4	$ 6.0