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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

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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