EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
EMPLOYEE BENEFIT PLANS
Stock-based compensation costs, pretax	$ 46	$ 52
2008 Stock Incentive Plan
EMPLOYEE BENEFIT PLANS
Shares available for issuance under the plan	7,100,000
2008 Stock Incentive Plan | Stock Options
EMPLOYEE BENEFIT PLANS
Expiration period from the date of grant	10 years
Portion of awards vesting on each of the first three anniversary dates of the grant (as a percent)	33.30%
Vesting period	3 years
2008 Stock Incentive Plan | Restricted Stock Units
EMPLOYEE BENEFIT PLANS
Contractual right to receive shares of common stock for a stock based award	1
Portion of awards vesting on each of the first three anniversary dates of the grant (as a percent)	33.30%
Vesting period	3 years