Receivables (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2012
Finance Receivables:
Net finance receivables	$ 10.0		$ 5.2
Change in allowance for doubtful accounts
Allowance for doubtful accounts at beginning of period	18.0	29.5
ProvisionForDoubtfulAccountsNetOfRecoveries	0.5	(1.9)
Charge-off of accounts	0	(6.5)
Foreign currency translation	0	0
Allowance for doubtful accounts at end of period	18.5	21.1
Finance receivables
Finance Receivables:
Finance receivables	10.7		6.0
Less unearned income	(0.7)		(0.8)
Net finance receivables	10.0		5.2
Less allowance for doubtful accounts	(1.5)		(1.4)
Finance receivables net of allowances	8.5		3.8
Contractual maturities of finance receivables
Capital Leases Future, Minimum Payments Receivable, Remainder of Fiscal Year	8.7
2014	0.9
2015	0.6
2016	0.2
2017	0.1
2018	0.1
Thereafter	0.1
Aging of receivables that are past due:
Greater than 30 days and less than 60 days	0.1		0.1
Greater than 60 days and less than 90 days	0		0
Greater than 90 days	1.5		1.3
Receivables on nonaccrual status	3.2		3.4
Receivables subject to general reserves	6.4		1.5
Receivables subject to general reserves, Allowance for doubtful accounts	(0.1)		0
Receivables subject to specific reserves	3.6		3.7
Receivables subject to specific reserves, Allowance for doubtful accounts	(1.4)		(1.4)
Change in allowance for doubtful accounts
Allowance for doubtful accounts at beginning of period	1.4	11.5
ProvisionForDoubtfulAccountsNetOfRecoveries	0.1	(2.5)
Charge-off of accounts	0	(5.3)
Foreign currency translation	0	0
Allowance for doubtful accounts at end of period	1.5	3.7
Notes receivables
Aging of receivables that are past due:
Greater than 30 days and less than 60 days	0		0
Greater than 60 days and less than 90 days	0		0
Greater than 90 days	0		0
Receivables on nonaccrual status	19.5		19.0
Receivables subject to general reserves	0.9		0
Receivables subject to general reserves, Allowance for doubtful accounts	0		0
Receivables subject to specific reserves	22.9		24.6
Receivables subject to specific reserves, Allowance for doubtful accounts	(8.0)		(8.0)
Change in allowance for doubtful accounts
Allowance for doubtful accounts at beginning of period	8.0	8.9
ProvisionForDoubtfulAccountsNetOfRecoveries	0	0
Charge-off of accounts	0	(0.2)
Foreign currency translation	0	0
Allowance for doubtful accounts at end of period	8.0	8.7
Trade and other receivables
Change in allowance for doubtful accounts
Allowance for doubtful accounts at beginning of period	8.6	9.1
ProvisionForDoubtfulAccountsNetOfRecoveries	0.4	0.6
Charge-off of accounts	0	(1.0)
Foreign currency translation	0	0
Allowance for doubtful accounts at end of period	9.0	8.7
Restructured finance receivables
Aging of receivables that are past due:
Receivables subject to specific reserves	4.0
Restructured notes receivables
Aging of receivables that are past due:
Receivables subject to specific reserves	$ 23.3