Separation of Dealer Services (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Spinoff Announcement Date	April 10, 2014
Date of Form 10 Filing	June 10, 2014
Separation costs	$ 14.9	$ 0	$ 0
Minimum [Member]
Separation Cost, Expected Cost Remaining	40.0
Maximum [Member]
Separation Cost, Expected Cost Remaining	$ 50.0