EQUITY - Narrative (Details) (USD $)	0 Months Ended		6 Months Ended		1 Months Ended	3 Months Ended	0 Months Ended
	Sep. 29, 2014	Sep. 17, 2013	Dec. 31, 2014	Dec. 31, 2013	Feb. 04, 2015	Dec. 31, 2014 vote	Oct. 31, 2013	Jun. 30, 2014
Class of Stock [Line Items]
Treasury Stock Net Payment	$ 29.5
Treasury Stock, Value			766,600,000			766,600,000		575,400,000
Common stock, par value (in dollars per share)			$ 0.01			$ 0.01
Preferred stock, shares authorized			20,000,000.0			20,000,000.0		20,000,000.0
Preferred stock, shares outstanding			0			0		0
Dividends declared (in dollars per share)		$ 0.20	$ 0.20	$ 0.20
Employee Stock Options, RSU's and Employee Stock Ownership Program [Member]
Class of Stock [Line Items]
Cash received in connection with exercise of options and RSU's			22,400,000
RSU And Restricted Shares of Class A Common Stock [Member] | Other Noncurrent Liabilities [Member]
Class of Stock [Line Items]
Dividends payable			900,000			900,000
Restricted Stock Units (RSUs) [Member] | Other Noncurrent Liabilities [Member]
Class of Stock [Line Items]
Dividends payable			1,700,000			1,700,000
Restricted Stock Units (RSUs) [Member] | Additional Paid-in Capital [Member]
Class of Stock [Line Items]
Reduction of dividend accrual recorded in prior period			100,000
Former Chief Executive Officer [Member] | Employee Stock Option [Member]
Class of Stock [Line Items]
Cash received in connection with exercise of options and RSU's	0
Common Class A [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired					5,300,000	7,600,000
Shares issued			2,800,000
Common stock, par value (in dollars per share)			$ 0.01			$ 0.01		$ 0.01
Common Stock, Voting Rights Per Share			1			1
Common stock, shares authorized			800,000,000.0			800,000,000.0		800,000,000.0
Common stock, shares outstanding			84,400,000			84,400,000		90,200,000
Common Class A [Member] | Former Chief Executive Officer [Member]
Class of Stock [Line Items]
Treasury Stock, Shares, Acquired	2,400,000
Treasury Stock Acquired, Average Cost Per Share	$ 17.21
Shares issued			1,400,000
Common Class B [Member]
Class of Stock [Line Items]
Common stock, par value (in dollars per share)			$ 0.01			$ 0.01		$ 0.01
Common Stock, Voting Rights Per Share			10			10
Common stock, shares authorized			263,700,000			263,700,000		263,700,000
Common stock, shares outstanding			263,700,000			263,700,000		263,700,000
Common Class A and B [Member]
Class of Stock [Line Items]
Dividends paid		$ 71,900,000					$ 71,000,000
Minimum [Member]
Class of Stock [Line Items]
Treasury Stock Acquired, Average Cost Per Share					$ 18.65	$ 18.30
Maximum [Member]
Class of Stock [Line Items]
Treasury Stock Acquired, Average Cost Per Share					$ 20.89	$ 20.90