Receivables (Narrative) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Dec. 31, 2010	Dec. 31, 2011 days	Jun. 30, 2011
Receivables [Abstract]
Allowance for doubtful accounts as a percentage of notes receivable		6.00%	6.00%
Current notes receivable, non-accrual status		$ 1.2
Long-term notes receivable, non-accrual status		0.4
Percentage of notes receivable that are classified as current		99.00%	99.00%
Financing Receivable, Recorded Investment, Nonaccrual Status	2.9
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	$ 0.8
Notes receivable, number of days past due		60
Charge-offs as a percentage of notes receivable	1.00%