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Retirement and Post-Retirement Benefit Plans
 6 Months Ended
Apr. 30, 2019
Retirement Benefits [Abstract]  
Retirement and Post-Retirement Benefit Plans
Retirement and Post-Retirement Benefit Plans
The Company's net pension benefit cost for defined benefit plans recognized in the Condensed Consolidated Statements of Earnings for the three and six months ended April 30, 2019 and 2018, was as follows:
 
Three months ended April 30,
 
Six months ended April 30,
 
2019
 
2018
 
2019
 
2018
 
In millions
Service cost
$
21

 
$
27

 
$
42

 
$
53

Interest cost(1)
56

 
58

 
111

 
113

Expected return on plan assets(1)
(130
)
 
(145
)
 
(260
)
 
(284
)
Amortization and deferrals(1):
 

 
 

 
 
 
 

Actuarial loss
60

 
54

 
117

 
106

Prior service benefit
(4
)
 
(4
)
 
(8
)
 
(8
)
Net periodic benefit cost (credit)
3

 
(10
)
 
2

 
(20
)
Settlement loss(1)
1

 
2

 
6

 
2

Special termination benefits(1)
1

 
2

 
1

 
4

Net benefit cost (credit)
$
5

 
$
(6
)
 
$
9

 
$
(14
)
 
(1)
These non-service components of net periodic benefit cost were included in Non-service net periodic benefit credit in the Condensed Consolidated Statements of Earnings.
Net benefit cost for the Company's post-retirement benefit plans was not material for the three and six months ended April 30, 2019 and 2018.