Goodwill and Purchased Intangible Assets (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 30, 2011 segment Year M Step Market D	Sep. 30, 2010 Year	Sep. 30, 2009
Purchased intangible assets
Weighted-Average Life (in years)	14.3	14.3
Gross	$ 810.3	$ 808.6	$ 819.0
Accumulated Amortization	(369.2)	(309.6)
Net	441.1	499.0
Non-amortizable trade names	397.6	397.3	400.6
Intangible assets excluding goodwill, gross	1,207.9	1,205.9	1,219.6
Purchased intangible assets, net	838.7	896.3
Amortization of purchased intangible assets	60.8	60.5	62.3
Future amortization expense of purchased intangible assets for remainder of fiscal 2011 and the five succeeding fiscal years
2012	59.0
2013	56.5
2014	55.1
2015	54.3
2016	53.7
Distribution network
Purchased intangible assets
Weighted-Average Life (in years)	39.1	39.1
Gross	55.4	55.4	55.4
Accumulated Amortization	(20.8)	(19.3)
Net	34.6	36.1
Distribution network \| Pierce
Purchased intangible assets
Weighted-Average Life (in years)	40
Net	33.1
Non-compete
Purchased intangible assets
Weighted-Average Life (in years)	10.5	10.5
Gross	56.9	56.3	57.0
Accumulated Amortization	(53.0)	(50.6)
Net	3.9	5.7
Technology-related
Purchased intangible assets
Weighted-Average Life (in years)	11.7	11.8
Gross	104.8	104.0	104.4
Accumulated Amortization	(53.3)	(44.6)
Net	51.5	59.4
Customer relationships
Purchased intangible assets
Weighted-Average Life (in years)	12.7	12.7
Gross	576.7	577.2	588.2
Accumulated Amortization	(229.9)	(183.8)
Net	346.8	393.4
Other
Purchased intangible assets
Weighted-Average Life (in years)	16.5	16.6
Gross	16.5	15.7	14.0
Accumulated Amortization	(12.2)	(11.3)
Net	$ 4.3	$ 4.4

Sum of the gross carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date.

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Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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