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EARNINGS PER SHARE | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
EARNINGS PER SHARE | EARNINGS PER SHARE The earnings per share amounts are the same for class A and class B common shares as the holders of each class are legally entitled to equal per share distributions whether through dividends or in liquidation. The following table sets forth the computation of basic and diluted earnings per share (in millions, except per share amounts):
| 2017 |  | 2016 |  | 2015
Numerator: |  |  |  |  |
Net income attributable to common shareowners | $ | 4,910 |  |  | $ | 3,431 |  |  | $ | 4,844 |
Denominator: |  |  |  |  |
Weighted-average shares | 865 |  |  | 878 |  |  | 896 |
Deferred compensation obligations | 1 |  |  | 1 |  |  | 1 |
Vested portion of restricted shares | 5 |  |  | 4 |  |  | 4 |
Denominator for basic earnings per share | 871 |  |  | 883 |  |  | 901 |
Effect of Dilutive Securities: |  |  |  |  |
Restricted performance units | 3 |  |  | 3 |  |  | 4 |
Stock options | 1 |  |  | 1 |  |  | 1 |
Denominator for diluted earnings per share | 875 |  |  | 887 |  |  | 906 |
Basic Earnings Per Share | $ | 5.64 |  |  | $ | 3.89 |  |  | $ | 5.38 |
Diluted Earnings Per Share | $ | 5.61 |  |  | $ | 3.87 |  |  | $ | 5.35 |
Diluted earnings per share for the years ended December 31, 2017, 2016 and 2015 exclude the effect of 0.1, 0.2 and 0.2 million shares, respectively, of common stock that may be issued upon the exercise of employee stock options because such effect would be antidilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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