STOCK-BASED COMPENSATION (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2011 Year Employee Counterparty Segment	Sep. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award
Number of Class A Common Stock shares reserved and available to be granted pursuant to equity compensation plans (in shares)	11,634,800
Compensation expense	$ 45.4	$ 30.6
Income tax benefit	14.9	10.1
Total unrecognized compensation cost related to nonvested stock-based awards	151.7
Weighted-average period over which compensation cost related to nonvested stock-based awards is expected to be recognized (in years)	2
Stock Options
Shares
Outstanding at the beginning of the year (in shares)	8,486,200
Granted at fair value (in shares)	1,647,700
Exercised (in shares)	(91,700)
Expired (in shares)	(900)
Forfeited (in shares)	(19,900)
Outstanding at the end of the year (in shares)	10,021,400
Vested and expected to vest (in shares)	9,880,900
Exercisable (in shares)	4,092,200
Weighted Average Exercise Price Per Share
Outstanding at the beginning of the year (in dollars per share)	$ 45.73
Granted at fair value (in dollars per share)	$ 98.17
Exercised (in dollars per share)	$ 39.67
Expired (in dollars per share)	$ 42.68
Forfeited (in dollars per share)	$ 54.71
Outstanding at the end of the period (in dollars per share)	$ 54.39
Vested and expected to vest Weighted-Average Exercise Price (in dollars per share)	$ 54.07
Exercisable Weighted-Average Exercise Price (in dollars per share)	$ 41.19
Additional General Disclosures
Outstanding Aggregate Intrinsic Value (in dollars)	352.3
Weighted-Average Contractual Life Remaining (in years)	7.2
Vested and expected to vest Aggregate Intrinsic Value (in dollars)	350.0
Vested and expected to vest Exercisable Weighted-Average Contractual Life Remaining (in years)	7.1
Exercisable Aggregate Intrinsic Value (in dollars)	190.9
Exercisable Weighted-Average Contractual Life Remaining (in years)	5.0
Per-share weighted-average grant date fair value of stock options granted (in dollars per share)	$ 34.68	$ 18.81
Intrinsic value of stock options exercised (in dollars)	$ 5.5	$ 7.7
Fair Value Of Option Grants, Assumptions and Methodology
Method used for estimating fair value of option grant	Black-Scholes
Weighted-average expected stock-price volatility (as a percent)	35.00%	31.00%
Weighted-average expected option life (in years)	8	8
Average risk-free interest rate (as a percent)	1.70%	2.20%
Average dividend yield (as a percent)	1.00%	1.10%