Segment Information (Service Revenue and Gross Profit On Service Revenue Of Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Sales Revenue, Services, Net	$ 557.2	$ 529.3	$ 534.4	$ 496.7	$ 536.6	$ 527.1	$ 518.5	$ 512.1	$ 2,117.6	$ 2,094.3	$ 2,016.0
Gross profit on service revenue	$ 207.9	$ 179.7	$ 183.5	$ 169.0	$ 189.8	$ 189.3	$ 186.0	$ 168.9	740.1	734.0	671.8
CRS [Member]
Sales Revenue, Services, Net									1,626.6	1,626.0	1,599.1
Gross profit on service revenue									514.7	515.0	472.6
PC [Member]
Sales Revenue, Services, Net									210.3	190.4	152.2
Gross profit on service revenue									89.8	88.2	71.7
PI [Member]
Sales Revenue, Services, Net									280.7	277.9	264.7
Gross profit on service revenue									$ 135.6	$ 130.8	$ 127.5