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Employee Related Obligations (Tables)
 12 Months Ended
Dec. 31, 2017
Compensation Related Costs [Abstract]  
Employee Related Obligations
At the end of 2017 and 2016, employee related obligations recorded on the Consolidated Balance Sheets were:
(Dollars in Millions)
 
2017
 
2016
Pension benefits
 
$
5,343

 
4,710

Postretirement benefits
 
2,331

 
2,733

Postemployment benefits
 
2,250

 
2,050

Deferred compensation
 
475

 
534

Total employee obligations
 
10,399

 
10,027

Less current benefits payable
 
325

 
412

Employee related obligations — non-current
 
$
10,074

 
9,615