Goodwill and Other Intangible Assets (Details 1) (USD $) In Millions	9 Months Ended
	Jun. 30, 2011	Sep. 30, 2010
Other intangible assets
Amortized intangible assets, carrying amount	$ 388.6	$ 359.6
Amortized intangible assets, accumulated amortization	207.5	186.0
Amortized intangible assets, net	181.1	173.6
Intangible assets not subject to amortization	43.7	43.7
Total other intangible assets, carrying amount	432.3	403.3
Total other intangible assets, net	224.8	217.3
Goodwill and Other Intangible Assets (Textuals) [Abstract]
Estimated amortization expense in 2011	35.6
Estimated amortization expense in 2012	33.9
Estimated amortization expense in 2013	27.3
Estimated amortization expense in 2014	22.1
Estimated amortization expense in 2015	17.4
Computer software products [Member]
Other intangible assets
Amortized intangible assets, carrying amount	175.2	160.1
Amortized intangible assets, accumulated amortization	120.1	107.3
Amortized intangible assets, net	55.1	52.8
Customer relationships [Member]
Other intangible assets
Amortized intangible assets, carrying amount	73.7	59.6
Amortized intangible assets, accumulated amortization	20.9	16.6
Amortized intangible assets, net	52.8	43.0
Technology [Member]
Other intangible assets
Amortized intangible assets, carrying amount	85.7	83.8
Amortized intangible assets, accumulated amortization	42.8	38.0
Amortized intangible assets, net	42.9	45.8
Trademarks [Member]
Other intangible assets
Amortized intangible assets, carrying amount	31.9	32.5
Amortized intangible assets, accumulated amortization	8.1	7.6
Amortized intangible assets, net	23.8	24.9
Other Intangible assets [Member]
Other intangible assets
Amortized intangible assets, carrying amount	22.1	23.6
Amortized intangible assets, accumulated amortization	15.6	16.5
Amortized intangible assets, net	$ 6.5	$ 7.1