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EMPLOYEE BENEFIT PLANS (Tables)
9 Months Ended
Sep. 30, 2014
Text Block [Abstract]  
Components of Net Periodic Benefit Cost
Net periodic benefit plan cost includes the following components:
 
Pension Benefits
 
Other Retiree Benefits
 
Three Months Ended September 30,
 
2014
 
2013
 
2014
 
2013
 
Millions of Dollars
Service Cost
$
2

 
$
3

 
$
1

 
$
1

Interest Cost
4

 
4

 

 

Expected Return on Plan Assets
(5
)
 
(5
)
 

 

Actuarial Loss Amortization
1

 
2

 

 

Net Periodic Benefit Cost
$
2

 
$
4

 
$
1

 
$
1

 
Pension Benefits
 
Other Retiree Benefits
 
Nine Months Ended September 30,
 
2014
 
2013
 
2014
 
2013
 
Millions of Dollars
Service Cost
$
7

 
$
8

 
$
3

 
$
3

Interest Cost
12

 
11

 
2

 
2

Expected Return on Plan Assets
(16
)
 
(14
)
 
(1
)
 
(1
)
Actuarial Loss Amortization
3

 
6

 

 

Net Periodic Benefit Cost
$
6

 
$
11

 
$
4

 
$
4