BUSINESS SEGMENT, CUSTOMER AND GEOGRAPHIC INFORMATION (Revenue By Customer Sector) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Revenue, Major Customer [Line Items]
Revenue from external customers	$ 905,718	$ 900,393	$ 894,186	$ 864,265	$ 912,931	$ 906,196	$ 931,627	$ 931,236	$ 3,564,562	$ 3,681,990	$ 3,774,473
Sales
Revenue, Major Customer [Line Items]
Revenue from external customers									3,564,562	3,681,990	3,774,473
Revenue percentage									100.00%	100.00%	100.00%
Department of Defense | Sales
Revenue, Major Customer [Line Items]
Revenue from external customers									2,578,024	2,735,102	2,944,924
Revenue percentage									72.30%	74.30%	78.00%
Federal civilian agencies | Sales
Revenue, Major Customer [Line Items]
Revenue from external customers									771,662	741,053	620,870
Revenue percentage									21.70%	20.10%	16.50%
Commercial and other | Sales
Revenue, Major Customer [Line Items]
Revenue from external customers									199,521	190,142	193,840
Revenue percentage									5.60%	5.20%	5.10%
State and local governments | Sales
Revenue, Major Customer [Line Items]
Revenue from external customers									$ 15,355	$ 15,693	$ 14,839
Revenue percentage									0.40%	0.40%	0.40%