SHARE-BASED COMPENSATION - Schedule of Stock Appreciation Rights Activity (Details) - Stock appreciation rights $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares
Rights
Balance, beginning of year | shares	417
Granted | shares	58
Exercised | shares	(79)
Forfeited or expired | shares	(14)
Balance, end of year | shares	382
Exercisable, end of year | shares	289
Weighted Average Exercise Price
Balance, beginning of year | $ / shares	$ 22.85
Granted | $ / shares	35.40
Exercised | $ / shares	23.91
Forfeited or expired | $ / shares	31.01
Balance, end of year | $ / shares	24.25
Exercisable, end of year | $ / shares	$ 21.63
Average Remaining Contractual Term
Balance, end of year	4 years 4 months 2 days
Exercisable, end of year	2 years 11 months 23 days
Aggregate Intrinsic Value
Balance, end of year | $	$ 14
Exercisable, end of year | $	$ 11