DEBT - Narrative (Details) (USD $)	12 Months Ended																	12 Months Ended											1 Months Ended		0 Months Ended				12 Months Ended		1 Months Ended			0 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Jun. 16, 2010 Senior Notes	Jun. 16, 2010 5.12% Series A notes due June 2017 Senior Notes	Jun. 30, 2014 Incremental Term Loan	Jun. 30, 2013 Incremental Term Loan	Jun. 25, 2014 Incremental Term Loan Term Loan	Jun. 30, 2014 2013 Revolving Facility	Jun. 30, 2013 2013 Revolving Facility	Jun. 30, 2013 2011 Term Loan	Jun. 30, 2012 2011 Term Loan	Jun. 30, 2014 Note Purchase Agreement Senior Notes	Jun. 16, 2010 5.67% Series B notes due June 2020 Senior Notes	Jun. 16, 2010 5.82% Series C notes due June 2022 Senior Notes	Jun. 30, 2014 Short-term Lines of Credit	Jun. 30, 2013 Short-term Lines of Credit	Jun. 30, 2014 Short-term Lines of Credit Minimum	Jun. 30, 2013 Short-term Lines of Credit Minimum	Jun. 30, 2014 Short-term Lines of Credit Maximum	Jun. 30, 2013 Short-term Lines of Credit Maximum	Apr. 02, 2013 Revolving Credit Facility, Swing Line Loan Line of Credit	Jun. 30, 2014 Letter of credit	Jun. 30, 2013 Letter of credit	Apr. 02, 2013 Revolving Loan Facility 2013 Term Loan Line of Credit	Aug. 22, 2011 Revolving Loan Facility 2011 Term Loan Line of Credit	Jun. 30, 2013 2011 Revolving Facility	Jun. 30, 2012 2011 Revolving Facility	Aug. 31, 2011 2011 Revolving Facility Line of Credit	Aug. 22, 2011 2011 Revolving Facility Line of Credit	Aug. 22, 2011 2011 Revolving Facility Line of Credit Minimum	Aug. 22, 2011 2011 Revolving Facility Line of Credit Maximum	Aug. 22, 2011 2011 Revolving Facility Term Loan Minimum Consolidated Leverage Ratio	Aug. 22, 2011 2011 Revolving Facility Term Loan Maximum Consolidated Leverage Ratio	Jun. 30, 2014 2013 Revolving Facility Incremental Term Loan Minimum Consolidated Leverage Ratio	Jun. 30, 2014 2013 Revolving Facility Incremental Term Loan Maximum Consolidated Leverage Ratio	Apr. 30, 2013 2013 Revolving Facility Line of Credit	Jun. 30, 2014 2013 Revolving Facility Line of Credit	Apr. 02, 2013 2013 Revolving Facility Line of Credit	Apr. 02, 2013 2013 Revolving Facility Line of Credit Minimum Consolidated Leverage Ratio	Apr. 02, 2013 2013 Revolving Facility Line of Credit Maximum Consolidated Leverage Ratio	Jun. 30, 2014 2013 Revolving Facility Term Loan Minimum Consolidated Leverage Ratio	Jun. 30, 2014 2013 Revolving Facility Term Loan Maximum Consolidated Leverage Ratio
Debt Instrument [Line Items]
Available lines of credit																$ 141,400,000	$ 162,700,000					$ 80,000,000			$ 1,250,000,000	$ 1,250,000,000				$ 1,250,000,000									$ 1,250,000,000
Short-term debt	18,800,000	35,100,000														18,800,000	35,100,000
Interest rate spread (as a percent)																		1.30%	0.90%	13.50%	9.50%
Deferred financing fees write-off	0	2,600,000	1,400,000																										1,400,000								2,600,000
Weighted average interest rate (as a percent)						1.60%	1.60%		1.30%	1.40%	2.00%	2.10%															1.70%	1.70%
Weighted-average interest rate (as a percent)	6.70%	6.80%
Undrawn letters of credit																							3,600,000	3,300,000														350,500,000
Deferred finance fees								2,200,000					400,000
Long-term debt				$ 500,000,000	$ 100,000,000			$ 625,000,000						$ 225,000,000	$ 175,000,000
Stated interest rate (as a percent)					5.12%									5.67%	5.82%
Spread on variable rate (as a percent)																																	0.05%	2.50%	0.00%	1.50%						0.00%	1.50%
Commitment fee (as a percent)																															0.20%	0.40%								0.15%	0.23%
Quarterly repayments 2016 (as a percent)																									10.00%
Quarterly repayments 2017 (as a percent)																									20.00%
Quarterly repayments 2018 (as a percent)																									70.00%
Consolidated leverage ratio									3.5
Interest coverage ratio									3.0
Interest coverage ratio following an acquisition									4.0