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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Tables)
 9 Months Ended
Sep. 30, 2014
Components of Net Periodic Benefit Costs (Credits)
The components of net periodic benefit costs (credits) are:
 
PENSION
 
QUARTER ENDED
 
YEAR-TO-DATE ENDED
DOLLAR AMOUNTS IN MILLIONS
SEPTEMBER 2014
 
SEPTEMBER 2013
 
SEPTEMBER 2014
 
SEPTEMBER 2013
Service cost(1)
$
13

 
$
16

 
$
40

 
$
48

Interest cost
67

 
61

 
205

 
183

Expected return on plan assets
(117
)
 
(109
)
 
(349
)
 
(329
)
Amortization of actuarial loss
33

 
55

 
94

 
166

Amortization of prior service cost
1

 
2

 
4

 
5

Loss due to curtailment and special termination benefits(2)
9

 
—

 
9

 
—

Total net periodic benefit cost (credit)
$
6

 
$
25

 
$
3

 
$
73

(1)
Service cost includes $2 million for year-to-date ended 2014 and $1 million and $4 million for quarter and year-to-date ended 2013 for employees that were part of the Real Estate Divestiture. These charges are included in our results of discontinued operations.
(2)
The 2014 curtailment and special termination benefits are related to involuntary terminations, due to restructuring activities, as well as the Real Estate Divestiture.

 
OTHER POSTRETIREMENT BENEFITS
 
QUARTER ENDED
 
YEAR-TO-DATE ENDED
DOLLAR AMOUNTS IN MILLIONS
SEPTEMBER 2014
 
SEPTEMBER 2013
 
SEPTEMBER 2014
 
SEPTEMBER 2013
Service cost
$
—

 
$
—

 
$
—

 
$
1

Interest cost
3

 
3

 
8

 
9

Amortization of actuarial loss
3

 
4

 
9

 
11

Amortization of prior service credit
(25
)
 
(5
)
 
(120
)
 
(17
)
Other
—

 
—

 
(4
)
 
2

Total net periodic benefit cost (credit)
$
(19
)
 
$
2

 
$
(107
)
 
$
6