Earnings Per Share (Schedule Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Net income attributable to common shares	$ 42.7	$ 47.9	$ 39.4	$ 24.9	$ 34.2	$ 37.7	$ 38.8	$ 37.1	$ 154.9	$ 147.8	$ 129.1
Weighted average number of shares outstanding, used in computing basic earnings per share									53.5	54.9	56.5
Dilutive common stock equivalents									0.7	0.9	1.0
Weighted average shares used in computing diluted earnings per share									54.2	55.8	57.5
Basic earnings per share									$ 2.90	$ 2.69	$ 2.28
Diluted earnings per share	$ 0.80	$ 0.89	$ 0.73	$ 0.45	$ 0.61	$ 0.68	$ 0.70	$ 0.67	$ 2.86	$ 2.65	$ 2.25
Anti-dilutive options and restricted stock (excluded from the calculation of diluted earnings per share)									0.7	0.8	0.5