WALGREEN CO | 2013 | FY | 3

Components of net periodic benefit costs (in millions):

 
 
2013
 
 
2012
 
 
2011
 
Service cost
 
$
9
 
 
$
13
 
 
$
15
 
Interest cost
 
 
14
 
 
 
22
 
 
 
22
 
Amortization of actuarial loss
 
 
12
 
 
 
8
 
 
 
14
 
Amortization of prior service cost
 
 
(22
)
 
 
(10
)
 
 
(10
)
Total postretirement benefit cost
 
$
13
 
 
$
33
 
 
$
41
 

Change in benefit obligation (in millions):

 
 
2013
 
 
2012
 
Benefit obligation at September 1
 
$
342
 
 
$
407
 
Service cost
 
 
9
 
 
 
13
 
Interest cost
 
 
14
 
 
 
22
 
Amendments
 
 
-
 
 
 
(139
)
Actuarial (gain) loss
 
 
(1
)
 
 
52
 
Benefit payments
 
 
(20
)
 
 
(18
)
Participants' contributions
 
 
6
 
 
 
5
 
Benefit obligation at August 31
 
$
350
 
 
$
342
 

Change in plan assets (in millions):

 
 
2013
 
 
2012
 
Plan assets at fair value at September 1
 
$
-
 
 
$
-
 
Participants' contributions
 
 
6
 
 
 
5
 
Employer contributions
 
 
14
 
 
 
13
 
Benefits paid
 
 
(20
)
 
 
(18
)
Plan assets at fair value at August 31
 
$
-
 
 
$
-
 

Funded status (in millions):

 
 
2013
 
 
2012
 
Funded status
 
$
(350
)
 
$
(342
)
Unrecognized actuarial gain
 
 
-
 
 
 
-
 
Unrecognized prior service cost
 
 
-
 
 
 
-
 
Accrued benefit cost at August 31
 
$
(350
)
 
$
(342
)

Amounts recognized in the Consolidated Balance Sheets (in millions):

 
 
2013
 
 
2012
 
Current liabilities (present value of expected 2014 net benefit payments)
 
$
(10
)
 
$
(10
)
Non-current liabilities
 
 
(340
)
 
 
(332
)
Net liability recognized at August 31
 
$
(350
)
 
$
(342
)

Amounts recognized in accumulated other comprehensive (income) loss (in millions):

 
 
2013
 
 
2012
 
Prior service credit
 
$
(228
)
 
$
(250
)
Net actuarial loss
 
 
148
 
 
 
161
 

Amounts expected to be recognized as components of net periodic costs for fiscal year 2014 (in millions):

 
 
2014
 
Prior service credit
 
$
(22
)
Net actuarial loss
 
 
11
 

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