Percentage Of Grants With Performance Vesting, Average Annual Operating Income Growth

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- Definition

Percentage Of Grants With Performance Vesting, Cumulative Free Cash Flow

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Payout Percentage Adjustment

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Maximum Stock Value Purchased per Employee

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- Definition

Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Equivalent Shares of Common Stock Per Unit

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Payout Percentage of Target

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Minimum Employee Subscription Rate

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Share Offering Period

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- Definition

Aggregate number of common shares reserved for future issuance.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- 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.

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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-Name Accounting Standards Codification
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- Definition

Gross number of share options (or share units) granted during the period.

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-Name Accounting Standards Codification
-Topic 718
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- Definition

Number of shares issued under share-based payment arrangement.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

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Stock Plans and Share-Based Compensation - Narrative (Details)		1 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2018 USD ($) shares	Feb. 28, 2022 shares	Jun. 30, 2022 shares	Jun. 30, 2021 shares	Jun. 30, 2022 shares	Jun. 30, 2021 shares
LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted (split-adjusted) (in shares)		1,600,000
LTIP \| Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of grants with performance vesting, average annual operating income growth		0.50
Percentage of grants with performance vesting, cumulative free cash flow		50.00%
Number of equivalent shares of CSX common stock per unit of award (in shares)		1
LTIP \| Performance Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout percentage range for participants		0.00%
LTIP \| Performance Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout percentage range for participants		200.00%
LTIP \| Performance Units \| Certain Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (split-adjusted) (in shares)		494,000
LTIP \| Performance Units \| Certain Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of payout subject to upward or downward adjustment (up to)		0.25
LTIP \| Performance Units \| Certain Executive Officers \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout percentage range for participants		250.00%
LTIP \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of stock options (in years)		10 years
Award vesting period (in years)		3 years
LTIP \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (split-adjusted) (in shares)		452,000
Number of equivalent shares of CSX common stock per unit of award (in shares)		1
Award vesting period (in years)		3 years
ESPP \| Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock registered for ESPP (in shares)	12,000,000
Minimum payroll deduction percentage	1.00%
Maximum payroll deduction percentage	10.00%
Maximum stock value available for purchase \| $	$ 25,000
Percentage of shares market price	85.00%
Share offering period	6 months
Shares issued (in shares)			0	0	326,000	396,000