Quarterly Operating Results (Schedule Of Unaudited Quarterly Results Of Operations) (Details) - USD ($) $ / shares in Units, $ 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
Selected Quarterly Financial Information [Abstract]
Sales Revenue, Services, Net	$ 536.6	$ 527.1	$ 518.5	$ 512.1	$ 523.0	$ 502.0	$ 499.3	$ 491.7	$ 2,094.3	$ 2,016.0	$ 1,939.4
Gross profit	189.8	189.3	186.0	168.9	162.9	164.0	172.0	172.9	734.0	671.8	660.2
Income from operations	64.2	69.7	54.6	35.5	39.3	54.2	52.8	53.6	224.0	199.9	199.5
Net income	$ 42.7	$ 47.9	$ 39.4	$ 24.9	$ 34.2	$ 37.7	$ 38.8	$ 37.1	$ 154.9	$ 147.8	$ 129.1
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