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Note 3 - Receivables (Detail) - Reconciliation Of Allowances For Credit Losses (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Allowance for credit losses	$ 76.6	$ 70.1	$ 72.8	$ 71.4
Provisions (1)	4.0	0.4	7.8	(0.9)
Allowance for credit losses	80.6	70.5	80.6	70.5
Current [Member]
Allowance for credit losses	63.3	46.8	63.3	46.8
Non-Current [Member]
Allowance for credit losses	$ 17.3	$ 23.7	$ 17.3	$ 23.7

The sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value.

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