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STOCK OWNERSHIP AND COMPENSATION PLANS (Activities Related to Stock Awards) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares outstanding, beginning of year 1.9 1.9 2.0
Shares outstanding, beginning of year weighted average grant date fair value $ 55.50 $ 57.08 $ 56.77
Shares granted 0.6 0.7 0.8
Shares granted weighted average grant date fair value $ 71.17 $ 52.72 $ 56.79
Shares vested (0.3) (0.3) (0.5)
Shares vested weighted average grant date fair value $ 55.74 $ 57.14 $ 56.25
Shares forfeited and cancelled (0.5) (0.4) (0.4)
Shares forfeited and cancelled weighted average grant date fair value $ 58.18 $ 56.44 $ 55.91
Shares outstanding, end of year 1.7 1.9 1.9
Shares outstanding, end of year weighted average grant date fair value $ 59.92 $ 55.50 $ 57.08
Total fair value of shares vested $ 20 $ 17 $ 28
Stock-based compensation expense 52 51 28
Income tax benefit related to stock-based compensation expense 20 $ 20 $ 11
Stock Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized stock-based compensation cost $ 29    
Unrecognized stock-based compensation cost weighted average period 1 year 10 months 24 days