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Retirement Benefits (Tables)
9 Months Ended
Sep. 30, 2014
Postemployment Benefits [Abstract]  
Schedule of Net Benefit Costs [Table Text Block]
The following tables set forth the components of net periodic benefit cost of the Company’s pension and OPEB plans:
 
Pension Benefits
 
Other Postretirement Benefits
 
Three Months Ended
September 30,
 
Three Months Ended
September 30,
 
2014
 
2013
 
2014
 
2013
Net Periodic Benefit Cost:
 
 
 
 
 
 
 
Service cost
$

 
$

 
$

 
$
(1
)
Interest cost

 
2

 

 
1

Expected return on plan assets

 
(3
)
 
(1
)
 
(2
)
Prior service credit amortization

 

 

 
1

Actuarial loss amortization

 
1

 

 

 

 

 
(1
)
 
(1
)
Regulatory adjustment(1)

 
1

 

 

Net periodic benefit cost
$

 
$
1

 
$
(1
)
 
$
(1
)
 
Pension Benefits
 
Other Postretirement Benefits
 
Nine Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2014
 
2013
 
2014
 
2013
Net Periodic Benefit Cost:
 
 
 
 
 
 
 
Service cost
$

 
$
3

 
$

 
$

Interest cost

 
6

 
1

 
2

Expected return on plan assets

 
(9
)
 
(4
)
 
(5
)
Prior service credit amortization

 

 

 
1

Actuarial loss amortization

 
2

 

 

 

 
2

 
(3
)
 
(2
)
Regulatory adjustment(1)

 
5

 

 

Net periodic benefit cost
$

 
$
7

 
$
(3
)
 
$
(2
)

(1) 
The Company has historically recovered certain qualified pension benefit plan and other postretirement benefit plan costs through rates charged to utility customers.  Certain utility commissions require that the recovery of these costs be based on the Employee Retirement Income Security Act of 1974, as amended, or other utility commission specific guidelines.  The difference between these regulatory-based amounts and the periodic benefit cost calculated pursuant to GAAP is deferred as a regulatory asset or liability and amortized to expense over periods in which this difference will be recovered in rates, as promulgated by the applicable utility commission.