Goodwill (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2015	Jun. 30, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	$ 1,222.2	$ 1,224.4
Decrease in goodwill due to adjustment of provisional accounting estimates	$ 4.8