Goodwill and Other Intangible Assets (Details 1) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Other intangible assets
Amortized intangible assets, carrying amount	$ 359.4	$ 338.4
Amortized intangible assets, accumulated amortization	194.4	172.6
Amortized intangible assets, net	165.0	165.8
Intangible assets not subject to amortization	43.7	43.7
Total other intangible assets, carrying amount	403.1	382.1
Total other intangible assets, net	208.7	209.5
Goodwill and Other Intangible Assets (Textual) [Abstract]
Estimated amortization expense in 2013	32.6
Estimated amortization expense in 2014	34.2
Estimated amortization expense in 2015	28.5
Estimated amortization expense in 2016	24.9
Estimated amortization expense in 2017	20.9
Computer software products [Member]
Other intangible assets
Amortized intangible assets, carrying amount	138.8	123.4
Amortized intangible assets, accumulated amortization	71.1	61.2
Amortized intangible assets, net	67.7	62.2
Customer relationships [Member]
Other intangible assets
Amortized intangible assets, carrying amount	76.7	72.6
Amortized intangible assets, accumulated amortization	35.4	30.7
Amortized intangible assets, net	41.3	41.9
Technology-Based Intangible Assets [Member]
Other intangible assets
Amortized intangible assets, carrying amount	91.0	88.9
Amortized intangible assets, accumulated amortization	55.1	50.9
Amortized intangible assets, net	35.9	38.0
Trademarks [Member]
Other intangible assets
Amortized intangible assets, carrying amount	30.7	32.1
Amortized intangible assets, accumulated amortization	14.9	12.9
Amortized intangible assets, net	15.8	19.2
Other [Member]
Other intangible assets
Amortized intangible assets, carrying amount	22.2	21.4
Amortized intangible assets, accumulated amortization	17.9	16.9
Amortized intangible assets, net	$ 4.3	$ 4.5