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EARNINGS AND DIVIDENDS PER SHARE (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Earnings Per Share [Abstract]        
Earnings, net of tax $ 292 $ 255 $ 570 $ 506
Weighted average shares used for basic EPS (in shares) 145,300,000 147,800,000 145,700,000 147,800,000
Dilutive effect of stock options and other awards 1,100,000 1,100,000 1,100,000 1,100,000
Weighted average shares used for diluted EPS (in shares) 146,400,000 148,900,000 146,800,000 148,900,000
Earnings per share, basic $ 2.01 $ 1.73 $ 3.91 $ 3.43
Earnings per share, diluted $ 2.00 $ 1.71 $ 3.89 $ 3.40
Underlying options excluded from the computation of diluted earnings per share (in shares) 850,970 1,056,961 1,008,667 1,076,935
Shares repurchased (in shares) 1,232,977 344,790 2,176,676 632,071
Cash dividends declared (per share) $ 0.51 $ 0.46 $ 1.02 $ 0.92