STOCK-BASED COMPENSATION (Details 2) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Long-term stock awards
Unvested stock award shares
Balance at the beginning of the period (in shares)	8,000,000	8,000,000	10,000,000
Granted (in shares)	1,729,800	2,000,000	1,000,000
Vested (in shares)	2,000,000	2,000,000	2,000,000
Forfeited (in shares)	1,000,000		1,000,000
Balance at the end of the period (in shares)	6,000,000	8,000,000	8,000,000
Weighted average grant date fair value
Balance at the beginning of the period (in dollars per share)	$ 17	$ 16	$ 17
Granted (in dollars per share)	$ 22	$ 20	$ 12
Vested (in dollars per share)	$ 17	$ 17	$ 18
Forfeited (in dollars per share)	$ 19	$ 16	$ 17
Balance at the end of the period (in dollars per share)	$ 18	$ 17	$ 16
Additional disclosures
Total unrecognized compensation expense	$ 60	$ 69	$ 72
Remaining weighted average vesting period	3 years	3 years	4 years
Total market value (at the vesting date) of stock award shares	$ 50	$ 38	$ 27
2014 Plan
Stock-based compensation
Common stock available for granting stock options and other long-term stock incentive awards	12,200,000