Note 1 - Summary of Significant Accounting Policies (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Other Liabilities and Deferred Revenue, Noncurrent (in Dollars)	$ 6.5
Percentage of Net Other Productive Assets	16.00%	17.00%	17.00%
Annual Installments Period Minimum	20
Annual Installments Period Maximum	26
Winners Electing Lump Sum Payment Option Percent	90.00%
Annuity Interest Accretion (in Dollars)	20.0	22.4	24.8
Stock Option Contractual Term At Date Of Grant	10
Advertising Expense (in Dollars)	$ 34.3	$ 10.8	$ 11.3
Contracts Payment Terms Minimum	one
Contracts Payment Terms Maximum	five
Notes Payment Terms Minimum	one
Notes Payment Terms Maximum	seven
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years