Goodwill and Other Intangible Assets (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014
Other intangible assets
Amortized intangible assets, carrying amount	$ 399.1	$ 392.1
Amortized intangible assets, accumulated amortization	192.5	189.6
Amortized intangible assets, net	206.6	202.5
Intangible assets not subject to amortization	43.7	43.7
Total other intangible assets, carrying amount	442.8	435.8
Total other intangible assets, net	250.3	246.2
Goodwill and Other Intangible Assets (Textual) [Abstract]
Estimated amortization expense in 2015	31.3
Estimated amortization expense in 2016	34.8
Estimated amortization expense in 2017	30.7
Estimated amortization expense in 2018	24.7
Estimated amortization expense in 2019	18.8
Computer software products [Member]
Other intangible assets
Amortized intangible assets, carrying amount	176.7	169.1
Amortized intangible assets, accumulated amortization	84.1	82.5
Amortized intangible assets, net	92.6	86.6
Customer relationships [Member]
Other intangible assets
Amortized intangible assets, carrying amount	90.1	89.8
Amortized intangible assets, accumulated amortization	45.5	45.4
Amortized intangible assets, net	44.6	44.4
Technology [Member]
Other intangible assets
Amortized intangible assets, carrying amount	83.9	84.0
Amortized intangible assets, accumulated amortization	39.1	38.2
Amortized intangible assets, net	44.8	45.8
Trademarks [Member]
Other intangible assets
Amortized intangible assets, carrying amount	32.9	33.7
Amortized intangible assets, accumulated amortization	14.2	14.0
Amortized intangible assets, net	18.7	19.7
Other [Member]
Other intangible assets
Amortized intangible assets, carrying amount	15.5	15.5
Amortized intangible assets, accumulated amortization	9.6	9.5
Amortized intangible assets, net	$ 5.9	$ 6.0