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Accounts Payable and Other Current Liabilities
12 Months Ended
Dec. 31, 2015
Payables and Accruals [Abstract]  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Accounts Payable and Other Current Liabilities
 
Accounts payable and other current liabilities consisted of the following (in millions):
 
 
December 31,
2015
 
December 31,
2014
Compensation and benefits payable
 
$
776

 
$
789

Property and income tax liabilities
 
337

 
330

Capital expenditure estimated liabilities
 
317

 
195

Accounts payable
 
292

 
344

Accrued interest
 
286

 
265

Customer incentives
 
135

 
151

Casualty and environmental liabilities
 
135

 
140

Rents and leases
 
111

 
158

Other
 
855

 
1,063

      Total
 
$
3,244

 
$
3,435