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Employee Benefit Plans (Tables)
 3 Months Ended
Dec. 31, 2019
Compensation And Retirement Disclosure [Abstract]  
Schedule of Components of Pension and Other Postretirement Benefit Costs for Continuing Operation

The following table details the components of pension and other postretirement benefit costs for continuing operations.

 

 

 

Pension benefits

 

 

Other postretirement

benefits

 

(In millions)

 

2019

 

 

2018

 

 

2019

 

 

2018

 

Three months ended December 31

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Service cost

 

$

1

 

 

$

2

 

 

$

—

 

 

$

—

 

Interest cost

 

 

2

 

 

 

3

 

 

 

1

 

 

 

—

 

Expected return on plan assets

 

 

(3

)

 

 

(3

)

 

 

—

 

 

 

—

 

Curtailment

 

 

—

 

 

 

(18

)

 

 

—

 

 

 

—

 

Actuarial (gain) loss

 

 

—

 

 

 

—

 

 

 

—

 

 

 

—

 

Total net periodic benefit costs

 

$

—

 

 

$

(16

)

 

$

1

 

 

$

—