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Other Liabilities (Tables)
12 Months Ended
Dec. 31, 2014
Other Liabilities Disclosure [Abstract]  
Other Liabilities
 
December 31,
 
2014
 
2013
 
($ in millions)
 
 
 
 
Net retiree other postretirement benefit obligations (Note 11)
$
309

 
$
566

Long-term advances from Conrail (Note 5)
280

 
133

Net pension benefit obligations (Note 11)
260

 
218

Casualty and other claims (Note 16)
199

 
214

Deferred compensation
116

 
120

Other
148

 
193

 
 
 
 
Total
$
1,312

 
$
1,444