STOCK-BASED COMPENSATION (Details 2) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended |
Sep. 30, 2015USD ($)item$ / sharesshares | Sep. 30, 2015USD ($)$ / sharesshares | Sep. 30, 2014USD ($) | Jun. 30, 2015$ / sharesshares | Jun. 30, 2013shares |
Restricted Stock Units | | | | | |
Other Equity Compensation Plans | | | | | |
Nonvested at the beginning of the period (in shares) | | 2,592,100 | | | |
Granted (in shares) | | 1,555,400 | | | |
Dividend equivalents (in shares) | | 3,700 | | | |
Vested (in shares) | | (5,700) | | | |
Forfeited (in shares) | | (26,000) | | | |
Nonvested at the end of the period (in shares) | 4,119,500 | 4,119,500 | | 2,592,100 | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted-Average Grant Date Fair Value | | | | | |
Nonvested at the beginning of the period (in dollars per share) | $ / shares | | $ 70.31 | | | |
Granted (in dollars per share) | $ / shares | | 77.35 | | | |
Dividend equivalents (in dollars per share) | $ / shares | | 79.70 | | | |
Vested (in dollars per share) | $ / shares | | 62.12 | | | |
Forfeited (in dollars per share) | $ / shares | | 72.44 | | | |
Nonvested at the end of the period (in dollars per share) | $ / shares | $ 72.97 | $ 72.97 | | $ 70.31 | |
Restricted Stock Units | RSU grants scheduled to vest in fiscal 2017 | | | | | |
Other Equity Compensation Plans | | | | | |
RSU grants scheduled to vest (in shares) | | 544,100 | | | |
Restricted Stock Units | RSU grants scheduled to vest in fiscal 2018 | | | | | |
Other Equity Compensation Plans | | | | | |
RSU grants scheduled to vest (in shares) | | 559,200 | | | |
Restricted Stock Units | RSU grants scheduled to vest in fiscal 2019 | | | | | |
Other Equity Compensation Plans | | | | | |
RSU grants scheduled to vest (in shares) | | 452,100 | | | |
Performance Share Units | | | | | |
Other Equity Compensation Plans | | | | | |
Nonvested at the beginning of the period (in shares) | | 550,400 | | | |
Granted (in shares) | | 277,400 | | | |
Vested (in shares) | | | | (249,900) | |
Nonvested at the end of the period (in shares) | 827,800 | 827,800 | | 550,400 | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted-Average Grant Date Fair Value | | | | | |
Nonvested at the beginning of the period (in dollars per share) | $ / shares | | $ 71.59 | | | |
Granted (in dollars per share) | $ / shares | | 77.35 | | | |
Nonvested at the end of the period (in dollars per share) | $ / shares | $ 73.52 | $ 73.52 | | $ 71.59 | |
Performance Share Units | Common Class A | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award | | | | | |
Common Stock issued (in shares) | 276,200 | | | | |
Performance Share Units Based on Total Stockholder Return | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted-Average Grant Date Fair Value | | | | | |
Grant date fair value (in USD) | $ | $ 11 | $ 11 | | | |
Method used for estimating grant date fair value | | lattice model with a Monte Carlo | | | |
Dividend yield (as a percent) | | 1.00% | | | |
Weighted-average expected volatility (as a percent) | | 32.00% | | | |
Performance Share Units Based on Total Stockholder Return | Performance share units based on total stockholders return vesting (contractual term 33 months) | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted-Average Grant Date Fair Value | | | | | |
Weighted-average expected life | | 33 months | | | |
Weighted-average risk-free interest rate (as a percent) | | 0.30% | | | |
Performance Share Units Based on Total Stockholder Return | Performance share units based on total stockholders return vesting (contractual term 45 months) | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted-Average Grant Date Fair Value | | | | | |
Weighted-average expected life | | 45 months | | | |
Weighted-average risk-free interest rate (as a percent) | | 0.50% | | | |
Performance Share Units Based on Total Stockholder Return | Performance share units based on total stockholders return vesting (contractual term 57 months) | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted-Average Grant Date Fair Value | | | | | |
Weighted-average expected life | | 57 months | | | |
Weighted-average risk-free interest rate (as a percent) | | 0.70% | | | |
Performance Share Units Based on Total Stockholder Return | Common Class A | Executive | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award | | | | | |
Target payout for performance share units in Class A Common Stock (in shares) | | | | | 162,760 |
Common Stock issued (in shares) | 42,549 | | | | |
Performance Share Units Based on Total Stockholder Return | Common Class A | Maximum | Executive | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award | | | | | |
Target payout for performance share units in Class A Common Stock (in shares) | | 260,416 | | | |
Long-term Performance Share Units | Common Class A | Executive | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award | | | | | |
Target payout for performance share units in Class A Common Stock (in shares) | 387,848 | | | | |
Number of tranches | item | 3 | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted-Average Grant Date Fair Value | | | | | |
Grant date fair value (in USD) | $ | $ 30 | $ 30 | | | |
Long-term Performance Share Units | Common Class A | Executive | Performance period ending June 30, 2018 | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award | | | | | |
Target payout for performance share units in Class A Common Stock (in shares) | 129,283 | | | | |
Long-term Performance Share Units | Common Class A | Executive | Performance period ending June 30, 2019 | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award | | | | | |
Target payout for performance share units in Class A Common Stock (in shares) | 129,283 | | | | |
Long-term Performance Share Units | Common Class A | Executive | Performance period ending June 30, 2020 | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award | | | | | |
Target payout for performance share units in Class A Common Stock (in shares) | 129,283 | | | | |
Share Units | | | | | |
Non-Employee Director Plans | | | | | |
Outstanding at the beginning of the period (in shares) | | 110,300 | | | |
Dividend equivalents (in shares) | | 300 | | | |
Outstanding at the end of the period (in shares) | 110,600 | 110,600 | | 110,300 | |
Weighted-Average Grant Date Fair Value Per Share | | | | | |
Outstanding at the beginning of the period (in dollars per share) | $ / shares | | $ 41.24 | | | |
Dividend equivalents (in dollars per share) | $ / shares | | 77.40 | | | |
Outstanding at the end of the period (in dollars per share) | $ / shares | $ 41.35 | $ 41.35 | | $ 41.24 | |
Cash Units | | | | | |
Non-employee Director Deferred Cash Compensation, Cash Payout Shares | | | | | |
Deferred compensation expense (income) to reflect additional deferrals and change in market value (in dollars) | $ | | $ (1.2) | $ 0.2 | | |