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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Schedule of Computation of Basic and Diluted Earnings per Share | The following table sets forth the computation of basic earnings per share and earnings per share, assuming dilution:
| Fiscal Years
| 2020 |  | 2019 |  | 2018
Numerator (Dollars in Millions): |  |  |
Net Earnings | $ | 2,765 |  |  | $ | 3,331 |  |  | $ | 3,309 |
Dividend Equivalents on Restricted Stock | — |  |  | — |  |  | (1) |
Net Earnings, Attributable to Common Shareholders | $ | 2,765 |  |  | $ | 3,331 |  |  | $ | 3,308 |
Denominator (Units in Millions): |  |  |  |  |
Average Common Shares Outstanding | 766 |  |  | 796 |  |  | 857 |
Other Potentially Dilutive Common Shares | 2 |  |  | 2 |  |  | 4 |
Average Common Shares Outstanding, Assuming Dilution | 768 |  |  | 798 |  |  | 861 |
Net Earnings Per Share, Basic | $ | 3.61 |  |  | $ | 4.18 |  |  | $ | 3.86 |
Net Earnings Per Share, Assuming Dilution | $ | 3.60 |  |  | $ | 4.17 |  |  | $ | 3.84 |
Schedule of Average Outstanding Equity Awards Excluded from Diluted Earnings Per Share Calculation | The total average outstanding equity awards that were excluded from the diluted earnings per share calculation because their effect was antidilutive is in the table below.
| Fiscal Years
| 2020 |  | 2019 |  | 2018
Antidilutive stock options excluded from Diluted EPS (in millions) | 2 |  |  | 1 |  |  | — |
Schedule of Share Repurchase Activity | During 2020, 2019, and 2018, CSX repurchased the following shares:
| Fiscal Years
| 2020 |  | 2019 |  | 2018
Shares Repurchased (Units in Millions) | 13 |  |  | 48 |  |  | 72 |
Cost of Shares (Dollars in Millions) | $ | 867 |  |  | $ | 3,373 |  |  | $ | 4,671 |
Average Price Paid per Share | $ | 68.70 |  |  | $ | 70.54 |  |  | $ | 64.64 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 + Details
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