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EARNINGS PER COMMON SHARE COMPUTATION | 3 Months Ended
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Mar. 31, 2016
Earnings Per Share [Abstract] |
EARNINGS PER COMMON SHARE COMPUTATION | EARNINGS PER COMMON SHARE COMPUTATION Detail supporting the computation of basic and diluted earnings per common share was as follows for the three months ended March 31, 2016 and 2015:
| Three months ended March 31,
| 2016 |  | 2015
| (dollars in millions, except per common share results; number of shares in thousands)
Net income available for common stockholders | $ | 234 |  |  | $ | 430 |
Weighted average outstanding shares of common stock used to compute basic earnings per common share | 149,161 |  |  | 150,490 |
Dilutive effect of: |  |  |
Employee stock options | 169 |  |  | 218 |
Restricted stock | 1,224 |  |  | 1,641 |
Shares used to compute diluted earnings per common share | 150,554 |  |  | 152,349 |
Basic earnings per common share | $ | 1.57 |  |  | $ | 2.86 |
Diluted earnings per common share | $ | 1.56 |  |  | $ | 2.82 |
Number of antidilutive stock options and restricted stock excluded from computation | 1,273 |  |  | 718 |

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