Percentage Of Grants With Performance Vesting, Cumulative Free Cash Flow

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- Definition

Percentage Of Grants With Performance Vesting Operating Ratio

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No definition available.

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- Definition

Share Based Compensation Arrangement by Share Base Payment Award Number of Equivalent Shares of Common Stock Per Unit (e.g. performance units, restricted stock units, etc.).

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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 Downward 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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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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No definition available.

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- Definition

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

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No definition available.

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Topic 718
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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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No definition available.

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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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-Publisher FASB
-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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No definition available.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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-Publisher FASB
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- Definition

Number of share instruments newly issued under a share-based compensation plan.

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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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No definition available.

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- Definition

Per share or per unit amount of equity securities issued.

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No definition available.

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Share-Based Compensation - Narrative (Details) - USD ($)			3 Months Ended
	Feb. 06, 2019	May 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of stock options on the date of grant (in dollars per share)			$ 17.45	$ 14.62
LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted (in shares)	843,000			950,000
Fair value of stock options on the date of grant (in dollars per share)	$ 17.45
LTIP \| Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	300,000			350,000
Percentage of grants with performance vesting, operating ratio			50.00%
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		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 Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of payout subject to downward adjustment (up to)			25.00%
LTIP \| Performance Units \| Certain Executive Officers \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout percentage range for participants			225.00%
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 (in shares)	65,000			85,000
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)		4,000,000
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 under the plan during the period (in shares)			105,000
Weighted average purchase price of shares issued (in dollars per share)			$ 52.81