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Pension And Other Benefit Plans
 3 Months Ended
Apr. 03, 2020
Retirement Benefits [Abstract]  
Pension and Other Benefit Plans

The following sets forth the components of the Company’s net periodic benefit cost of the defined benefit pension plans ($ in millions):

Components of net periodic pension cost:

 
Three Month Period Ended
($ in millions)
April 3, 2020
 
March 29, 2019
Service cost
$
(2.6
)
 
$
(2.3
)
Interest cost
(0.4
)
 
(0.5
)
Expected return on plan assets
0.9

 
0.8

Amortization of initial net obligation
(0.1
)
 
(0.1
)
Amortization of prior service credit
0.1

 
—

Amortization of actuarial loss
(0.4
)
 
(0.1
)
Net periodic pension cost
$
(2.5
)
 
$
(2.2
)

The net periodic benefit cost during the three month periods ended April 3, 2020 and March 29, 2019, are reflected in the following captions in the accompanying Condensed Consolidated and Combined Statements of Operations ($ in millions):
    
 
Three Month Period Ended
 
April 3, 2020
 
March 29, 2019
Service cost:
 
 
 
Selling, general and administrative expenses
$
(2.6
)
 
$
(2.3
)
Other net periodic pension costs:
 
 
 
Nonoperating income (expense), net
0.1

 
0.1

Total
$
(2.5
)
 
$
(2.2
)