LONG-TERM DEBT AND LEASE OBLIGATIONS (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended		1 Months Ended			1 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Feb. 28, 2013 4 1/2% senior secured notes due 2021	Mar. 31, 2013 4 1/2% senior secured notes due 2021	Dec. 31, 2012 4 1/2% senior secured notes due 2021	Feb. 28, 2013 10% senior notes due 2018
LONG-TERM DEBT AND LEASE OBLIGATIONS
Aggregate principal amount of notes sold			$ 850
Debt repurchased						645
Loss from early extinguishment of debt	177	0				177
Interest rate, stated percentage			4.50%	4.50%	4.50%	10.00%
Repurchase balance principal amount outstanding			$ 69