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Employee Benefit Plans (Notes)
 3 Months Ended
Apr. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Pension and Other Postretirement Benefits Disclosure [Text Block]
EMPLOYEE BENEFIT PLANS

The Company maintains several pension and retirement plans, and also provides certain health-care and life insurance benefits.

Net periodic pension and other postretirement benefit expense included the following components:
 
 
 
Three Months Ended April 30,
 
 
Pension Benefits
 
Other
Postretirement Benefits
(in millions)
 
2015
 
2014
 
2015
 
2014
Net Periodic Benefit Cost:
 
 
 
 
 
 
 
 
Service cost
 
$
6.0

 
$
4.6

 
$
1.1

 
$
0.6

Interest cost
 
7.7

 
7.1

 
0.8

 
0.7

Expected return on plan assets
 
(6.1
)
 
(5.9
)
 
—

 
—

Amortization of prior service cost (credit)
 
—

 
0.1

 
(0.2
)
 
(0.2
)
Amortization of net loss
 
7.4

 
3.4

 
0.4

 
—

Net expense
 
$
15.0

 
$
9.3

 
$
2.1

 
$
1.1