Note 4 - Receivables (Detail) - Customer Financing, Recorded Investment (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
principal and interest due, net of deferred interest and fees of $8.1 in 2012 and $11.6 in 2011
Individually evaluated for impairment	$ 123.2	$ 104.2
Collectively evaluated for impairment	307.1	260.7
Total	430.3	364.9
Allowances for Credit Losses
Individually evaluated for impairment	59.9	58.6
Collectively evaluated for impairment	12.9	12.8
Total	$ 72.8	$ 71.4