STOCKHOLDERS' EQUITY (Details 4) (USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Restricted Stock Units, Performance and Non Performance - Based
Restricted stock units, Number of Shares
Balance at the beginning of the period (in shares)		29,250,000	24,044,000	20,422,000
Stock units cancelled (in shares)		(1,025,000)	(2,151,000)	(1,766,000)
Balance at the end of the period (in shares)		23,187,000	29,250,000	24,044,000
Restricted stock units, Weighted Average Fair Value Per Share
Balance at the beginning of the period (in dollars per share)		$ 5.56	$ 4.38	$ 4.33
Balance at the end of the period (in dollars per share)		$ 3.18	$ 5.56	$ 4.38
Unearned stock-based compensation expense related to unvested awards		$ 177,900,000	$ 127,100,000	$ 73,300,000
Weighted-average period of recognition of unearned compensation expense of unvested awards (in years)		2.8	3.2	3.0
Performance-Based Restricted Stock Units
Restricted stock units, Number of Shares
Stock units issued (in shares)		3,474,000	472,000	83,000
Stock units vested (in shares)	(8,476,000)	(8,485,000)
Stock units cancelled (in shares)		(25,000)	(951,000)	(1,016,000)
Restricted stock units withheld for taxes (in shares)		3,300,000
Restricted stock units, Weighted Average Fair Value Per Share
Stock units issued (in dollars per share)		$ 13.94	$ 5.49	$ 3.63
Stock units vested (in dollars per share)		$ 14.00
Stock units cancelled (in dollars per share)		$ 9.77	$ 4.10	$ 3.78
Stock units vested (in shares)	8,476,000	8,485,000
Restricted stock units issued, net of units withheld for taxes (in shares)		5,127,000
Cumulative recognized stock-based compensation expense		6,500,000	24,800,000	500,000
Non Performance-Based Restricted Stock Units
Restricted stock units, Number of Shares
Stock units issued (in shares)		6,343,000	11,701,000	8,951,000
Stock units vested (in shares)		(6,345,000)	(4,816,000)	(3,646,000)
Stock units cancelled (in shares)		(1,025,000)	(1,200,000)	(750,000)
Restricted stock units withheld for taxes (in shares)		2,300,000	1,400,000	1,300,000
Restricted stock units, Weighted Average Fair Value Per Share
Stock units issued (in dollars per share)		$ 10.88	$ 7.97	$ 4.18
Stock units vested (in dollars per share)		$ 11.79	$ 6.23	$ 3.83
Stock units cancelled (in dollars per share)		$ 6.80	$ 4.28	$ 3.90
Stock units vested (in shares)		6,345,000	4,816,000	3,646,000
2011 Plan
Restricted stock units, Number of Shares
Stock units issued (in shares)		3,409,000
Restricted stock units, Weighted Average Fair Value Per Share
Number of performance periods		3
Performance period		1Y
Cumulative performance period		3Y
Cumulative recognized stock-based compensation expense		$ 7,500,000