Annual report pursuant to Section 13 and 15(d)

STOCK INCENTIVE AND STOCK OPTION PLANS (Details 2)

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STOCK INCENTIVE AND STOCK OPTION PLANS (Details 2) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Stock option plan activity      
Balance, at the beginning of the period (in shares) 1,626,724 1,462,336 1,309,168
Granted (in shares) 476,205 350,630 432,370
Exercised (in shares) (53,545) (175,526) (265,528)
Forfeited (in shares) (19,698) (10,716) (13,674)
Balance, at the end of the period (in shares) 2,029,686 1,626,724 1,462,336
Exercisable (in shares) 1,318,101 903,059 758,936
Weighted average exercise price activity      
Weighted-average Exercise Price at the beginning of the period (in dollars per share) $ 108.30 $ 95.35 $ 78.80
Weighted-average Exercise Price Granted (in dollars per share) 135.21 148.98 112.07
Weighted-average Exercise Price Exercised (in dollars per share) 82.89 82.06 40.48
Weighted-average Exercise Price Forfeited (in dollars per share) 135.89 102.56 105.19
Weighted-average Exercise Price at the end of the period (in dollars per share) 115.02 108.30 95.35
Weighted-average Exercise Price Exercisable (in dollars per share) $ 100.55 $ 92.18 $ 76.85
Weighted-average remaining contractual life of options outstanding 6 years 10 months 13 days    
Weighted-average remaining contractual life of options exercisable 5 years 8 months 23 days 6 years 18 days 5 years 11 months 9 days
Aggregate intrinsic value of options outstanding $ 13    
Aggregate intrinsic value of options exercisable $ 13 $ 48 $ 48
Weighted average grant date fair value of options granted (in dollars per share) $ 35.25 $ 49.16 $ 48.00
Total intrinsic value of options exercised $ 3 $ 12 $ 22