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PENSION PLANS
9 Months Ended
Jan. 29, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]  
PENSION PLANS
PENSION PLANS 
The components of net periodic pension cost consist of:
 
 
Three Months Ended
 
Nine Months Ended
 
 
January 29,
2012
 
January 30,
2011
 
January 29,
2012
 
January 30,
2011
 
 
(in millions)
 
(in millions)
Service cost
 
$
9.3

 
$
9.2

 
$
28.0

 
$
27.7

Interest cost
 
19.0

 
18.7

 
57.0

 
56.2

Expected return on plan assets
 
(19.9
)
 
(16.0
)
 
(59.7
)
 
(48.0
)
Net amortization
 
5.9

 
8.5

 
17.6

 
25.5

Net periodic pension cost
 
$
14.3

 
$
20.4

 
$
42.9

 
$
61.4


In June 2011 (fiscal 2012), we made a voluntary contribution of $100.0 million to our qualified pension plans above the minimum amount required under government regulations. As a result of the voluntary contribution, we now expect employer contributions to our qualified pension plans for fiscal 2012 to total approximately $140.0 million.