XML 48 R34.htm IDEA: XBRL DOCUMENT v3.20.2
Stock Plans and Share-Based Compensation - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
May 31, 2018
Feb. 29, 2020
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
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)     $ 17.77 $ 20.51 $ 18.87 $ 18.00
LTIP            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options granted (in shares)   1,300,000        
Fair value of stock options on the date of grant (in dollars per share)   $ 18.88        
LTIP | Performance Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
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        
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 (in shares)   218,000        
LTIP | Performance Units | Certain Executive Officers            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Awards granted (in shares)     0 0    
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   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 (in shares)   91,000        
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)         122,000 105,000
Weighted average purchase price of shares issued (in dollars per share)         $ 61.51 $ 52.81