v2.4.0.8
Debt (Details 3) (Pass-Through Trust Certificate [Member], 3.227% Certificates Due 2026 [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2014
May 20, 2014
Pass-Through Trust Certificate [Member] | 3.227% Certificates Due 2026 [Member]
     
Equipment Trust [Abstract]      
Issuance date   May 20, 2014  
Note amount     $ 500
Maturity date on new borrowing   May 14, 2026  
Interest rate on note     3.227%
Total locomotives financed from proceeds     245
Proceeds from debt net of issuance costs 402    
Debt issuance costs 3    
Locomotives delivered 199 199  
Proceeds held in escrow $ 95    
Locomotives scheduled for delivery 46 46