EARNINGS (LOSS) PER SHARE - Schedule of Exchange Agreement (Details) - shares										12 Months Ended
	Jul. 31, 2017	May 01, 2017	Jan. 31, 2017	Oct. 31, 2016	Aug. 01, 2016	May 02, 2016	Feb. 01, 2016	Nov. 02, 2015	Jul. 31, 2015	Jun. 30, 2017	Jun. 30, 2016
Class B Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Exchange of Class B common units for Class A common stock by member owners (in shares)		993,194	1,296,682	5,047,528	1,323,654	993,194	1,296,682	5,047,528	1,323,654	8,661,058
Number Outstanding After Exchange (in shares)						87,298,888	88,464,859	89,761,541	94,809,069	87,298,888	96,132,723
Percentage of Combined Voting Power Class B/Class A Common Stock		63.00%	64.00%	64.00%	67.00%
Class B Common Stock | Subsequent Event
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Exchange of Class B common units for Class A common stock by member owners (in shares)	1,231,410
Number Outstanding After Exchange (in shares)	86,067,478
Percentage of Combined Voting Power Class B/Class A Common Stock	62.00%
Class A Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Exchange of Class B common units for Class A common stock by member owners (in shares)										4,900,000
Number Outstanding After Exchange (in shares)						51,734,785	50,701,862	50,085,904	47,365,528	51,943,281	45,995,528
Percentage of Combined Voting Power Class B/Class A Common Stock		37.00%	36.00%	36.00%	33.00%
Class A Common Stock | Subsequent Event
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Number Outstanding After Exchange (in shares)	53,212,057
Percentage of Combined Voting Power Class B/Class A Common Stock	38.00%
Exchanged For Cash | Common Class B Unit
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Exchange of Class B common units for Class A common stock by member owners (in shares)			800,000	3,000,000
Exchanged For Class A Common Stock | Common Class B Unit
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Exchange of Class B common units for Class A common stock by member owners (in shares)			500,000	2,000,000
Exchanged For Class A Common Stock | Class B Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Exchange of Class B common units for Class A common stock by member owners (in shares)										4,900,000