Note 19 - Impairment and Restructuring (Detail) - Impairment (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Impairment	$ 40.6	$ 31.3	$ 93.5
Other restructuring			4.7
Total	42.5	15.8	68.4
Alabama [Member]
Impairment	12.8	3.6	61.3
Walker Digital [Member]
Impairment	14.6
Entraction [Member]
Impairment	15.1
Other Impairment [Member]
Impairment		12.2
DigiDeal [Member]
Impairment			$ 2.4