Goodwill and Other Intangible Assets (Details 1) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired during year	$ 5.4	$ 41.4
Other intangible assets
Amortized intangible assets, carrying amount	396.8	392.1
Amortized intangible assets, accumulated amortization	211.0	189.6
Amortized intangible assets, net	185.8	202.5
Intangible asset amortization expense	29.4	30.0	$ 31.4
Intangible assets not subject to amortization	43.7	43.7
Total other intangible assets, carrying amount	440.5	435.8
Total other intangible assets, net	229.5	246.2
Goodwill and Other Intangible Assets (Textuals) [Abstract]
Estimated amortization expense in 2016	29.3
Estimated amortization expense in 2017	26.1
Estimated amortization expense in 2018	19.9
Estimated amortization expense in 2019	17.3
Estimated amortization expense in 2020	14.4
Computer software products [Member]
Other intangible assets
Amortized intangible assets, carrying amount	182.4	169.1
Amortized intangible assets, accumulated amortization	91.9	82.5
Amortized intangible assets, net	90.5	86.6
Intangible asset amortization expense	9.4	9.4	$ 13.1
Customer relationships [Member]
Other intangible assets
Amortized intangible assets, carrying amount	87.2	89.8
Amortized intangible assets, accumulated amortization	50.1	45.4
Amortized intangible assets, net	37.1	44.4
Technology [Member]
Other intangible assets
Amortized intangible assets, carrying amount	83.4	84.0
Amortized intangible assets, accumulated amortization	44.1	38.2
Amortized intangible assets, net	39.3	45.8
Trademarks [Member]
Other intangible assets
Amortized intangible assets, carrying amount	32.3	33.7
Amortized intangible assets, accumulated amortization	16.3	14.0
Amortized intangible assets, net	16.0	19.7
Other [Member]
Other intangible assets
Amortized intangible assets, carrying amount	11.5	15.5
Amortized intangible assets, accumulated amortization	8.6	9.5
Amortized intangible assets, net	$ 2.9	$ 6.0