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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Tables)
 6 Months Ended
Jun. 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
JUNE 2014
 
JUNE 2013
 
JUNE 2014
 
JUNE 2013
Service cost(1)
$
13

 
$
16

 
$
27

 
$
32

Interest cost
69

 
62

 
138

 
122

Expected return on plan assets
(116
)
 
(111
)
 
(232
)
 
(220
)
Amortization of actuarial loss
30

 
56

 
61

 
111

Amortization of prior service cost
2

 
1

 
3

 
3

Total net periodic benefit cost (credit)
$
(2
)
 
$
24

 
$
(3
)
 
$
48

(1)
Service cost includes $1 million and $2 million for quarter and year-to-date ended 2014 and $2 million and $3 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.

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

 
$
1

 
$
—

 
$
1

Interest cost
$
2

 
$
3

 
5

 
6

Amortization of actuarial loss
3

 
4

 
6

 
7

Amortization of prior service credit
(47
)
 
(6
)
 
(95
)
 
(12
)
Other
—

 
2

 
(4
)
 
2

Total net periodic benefit cost (credit)
$
(42
)
 
$
4

 
$
(88
)
 
$
4