Receivables (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Allowance for doubtful accounts as a percentage of notes receivable	6.00%	6.00%
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 0.4	$ 2.2
Financing Receivable, Recorded Investment, 60 Days Past Due	$ 0.1	$ 0.1
Charge-offs as a percentage of notes receivable	0.90%	1.90%
Percentage of notes receivable that are classified as current	100.00%	99.00%
Thirty Days [Member]
Notes receivable delinquent period	30 days
Sixty Days [Member]
Notes receivable on non-accrual status period	60 days