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Earnings Per Common Share (Details 2) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Antidilutive securities excluded from computation of earnings per share |  |  |  |
Repurchase and retirement of common stock to offset the dilutive impact of long-term stock awards |  |  | 1.7 |
Repurchase and retirement of common stock cash aggregate to offset the dilutive effect |  |  | $ 39 | $ 35
Remaining number of shares authorized to be repurchased | 20.9 |  | 20.9 |
Cash dividends per common share paid (in dollars per share) | $ 0.075 | $ 0.075 | $ 0.15 | $ 0.15
Cash dividends per common share declared (in dollars per share) | $ 0.090 | $ 0.075 | $ 0.165 | $ 0.15
Stock options |  |  |  |
Antidilutive securities excluded from computation of earnings per share |  |  |  |
Antidilutive effect on computation of diluted earnings per common share (in shares) | 11 | 14 | 11 | 14
Unvested stock awards |  |  |  |
Antidilutive securities excluded from computation of earnings per share |  |  |  |
Grant of long-term stock awards |  |  | 1.7 |

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: 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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