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Earnings Per Share | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The following table sets forth the computation of basic earnings per share and earnings per share, assuming dilution:
| First Quarters |  |
| 2021 | 2020 |  |  |
Numerator (Dollars in millions): |  |  |  |  |
Net Earnings | $ | 706 |  | $ | 770 |  |  |  |
Denominator (Units in millions): |  |  |  |  |
Average Common Shares Outstanding | 761 |  | 772 |  |  |  |
Other Potentially Dilutive Common Shares | 1 |  | 1 |  |  |  |
Average Common Shares Outstanding, Assuming Dilution | 762 |  | 773 |  |  |  |
Net Earnings Per Share, Basic | $ | 0.93 |  | $ | 1.00 |  |  |  |
Net Earnings Per Share, Assuming Dilution | $ | 0.93 |  | $ | 1.00 |  |  |  |
Basic earnings per share is based on the weighted-average number of shares of common stock outstanding. Earnings per share, assuming dilution, is based on the weighted-average number of shares of common stock outstanding and common stock equivalents adjusted for the effects of common stock that may be issued as a result of potentially dilutive instruments. CSX's potentially dilutive instruments are made up of equity awards including performance units and employee stock options. NOTE 2. Earnings Per Share, continued When calculating diluted earnings per share, the potential shares that would be outstanding if all outstanding stock options were exercised are included. This number is different from outstanding stock options because it is offset by shares CSX could repurchase using the proceeds from these hypothetical exercises to obtain the common stock equivalent. The total average outstanding stock options that were excluded from the diluted earnings per share calculation because their effect was antidilutive is in the table below.
| First Quarters |  |
| 2021 | 2020 |  |  |
Antidilutive Stock Options Excluded from Diluted EPS (Millions) | 1 | 1 |  |  |
Share Repurchases In January 2019, the Company announced a $5 billion share repurchase program. As of March 31, 2021, approximately $339 million of authority remained under this program. On October 21, 2020, the Company announced a new, incremental $5 billion share repurchase program. Total repurchase authority remaining under both programs was $5.3 billion as of March 31, 2021. During first quarters 2021 and 2020, the Company engaged in the following repurchase activities:
| First Quarters |  |
| 2021 | 2020 |  |  |
Shares Repurchased (Millions) | 6 |  | 9 |  |  |  |
Cost of Shares (Dollars in millions) | $ | 551 |  | $ | 577 |  |  |  |
Share repurchases may be made through a variety of methods including, but not limited to, open market purchases, purchases pursuant to Rule 10b5-1 plans, accelerated share repurchases and negotiated block purchases. The timing of share repurchases depends upon management's assessment of marketplace conditions and other factors, and the program remains subject to the discretion of the Board of Directors. Future share repurchases are expected to be funded by cash on hand, cash generated from operations and debt issuances. Shares are retired immediately upon repurchase. In accordance with the Equity Topic in the Accounting Standards Codification ("ASC"), the excess of repurchase price over par value is recorded in retained earnings. Dividend Increase On February 10, 2021, the Company's Board of Directors authorized an 8% increase in the quarterly cash dividend to $0.28 per common share beginning March 2021.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
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