XML 46 R33.htm IDEA: XBRL DOCUMENT
v3.22.1

Earnings Per Share - Narrative (Details) - USD ($) |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 16, 2022 | Mar. 31, 2022 | Mar. 31, 2021 | [1] | Oct. 21, 2020 | Jan. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Remaining share repurchase authority amount |  | $ 2,000,000,000 |  |  |
Increase in quarterly dividend percentage | 7.00% |  |  |  |
Common stock dividends (in dollars per share) | $ 0.10 | $ 0.10 | $ 0.093 |  |
January 2019 program |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Authorized share repurchase program amount |  |  |  |  | $ 5,000,000,000
October 2020 program |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Authorized share repurchase program amount |  |  |  | $ 5,000,000,000 |
[1] | All prior period share and per share data has been retroactively adjusted to reflect the stock split effective June 28, 2021. Certain prior year data has been reclassified to conform to the current presentation.

X
- Definition Common Stock, Dividend Rate Increase, Percentage + References No definition available. + Details
Name: | csx_CommonStockDividendRateIncreasePercentage
Namespace Prefix: | csx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_CommonStockDividendsPerShareCashPaid
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=csx_ShareRepurchaseProgramJanuary2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=csx_ShareRepurchaseProgramOctober2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |