COMMON STOCK (Details) - USD ($) $ / shares in Units, $ in Millions											1 Months Ended	12 Months Ended
	Sep. 15, 2015	Aug. 14, 2015	Jun. 15, 2015	May. 04, 2015	Mar. 16, 2015	Feb. 04, 2015	Dec. 15, 2014	Nov. 03, 2014	Sep. 15, 2014	Aug. 14, 2014	Aug. 14, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Stock disclosures
Additional purchase of Class A Common Stock (in dollars)												$ 982.8	$ 667.2	$ 387.7
Cash dividends declared per common share (in dollars per share)												$ 0.92	$ 0.78	$ 1.08
Common Class A
Class of Stock
Common stock, par value (in dollars per share)												$ 0.01	$ 0.01
Common stock, shares authorized												1,300,000,000	1,300,000,000
Exchange basis for conversion of Class B Common Stock into shares of Class A Common Stock												One-for-one basis
Common stock holder voting rights												one vote per share
Increase (Decrease) in Stockholders' Equity
Balance at the beginning of the period (in shares)											227,836,200	234,156,400	239,016,200	237,119,500
Acquisition of treasury stock (in shares)												(12,397,100)	(9,602,200)	(6,718,800)
Conversion of Class B to Class A (in shares)												1,682,000	250,000	2,800,000
Stock-based compensation (in shares)												4,394,900	4,492,400	5,815,500
Balance at the end of the period (in shares)												227,836,200	234,156,400	239,016,200
Stock disclosures
Shares authorized by the Board of Directors to be repurchased (in shares)												216,000,000
Cumulative total acquired shares pursuant to the authorization (in shares)												187,600,000
Remaining authorized share repurchase balance (in shares)												28,400,000
Cash dividends declared per common share (in dollars per share)		$ 0.24		$ 0.24		$ 0.24		$ 0.24		$ 0.20
Dividends paid (in dollars per share)			$ 0.24		$ 0.24		$ 0.24		$ 0.20
Common Class A | Forecast
Stock disclosures
Dividends paid (in dollars per share)	$ 0.24
Common Class A | Subsequent event
Stock disclosures
Additional purchase of Class A Common Stock (in shares)											2,000,000
Additional purchase of Class A Common Stock (in dollars)											$ 175.0
Common Class B
Class of Stock
Common stock, par value (in dollars per share)												$ 0.01	$ 0.01
Common stock, shares authorized												304,000,000	304,000,000
Common stock holder voting rights												ten votes per share
Increase (Decrease) in Stockholders' Equity
Balance at the beginning of the period (in shares)											147,046,137	148,728,082	148,978,100	151,778,100
Conversion of Class B to Class A (in shares)												(1,682,000)	(250,000)	(2,800,000)
Balance at the end of the period (in shares)												147,046,137	148,728,082	148,978,100
Stock disclosures
Cash dividends declared per common share (in dollars per share)		$ 0.24		$ 0.24		$ 0.24		$ 0.24		$ 0.20
Dividends paid (in dollars per share)			$ 0.24		$ 0.24		$ 0.24		$ 0.20
Common Class B | Forecast
Stock disclosures
Dividends paid (in dollars per share)	$ 0.24