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Employee Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2017
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures
The following table provides the components of the net periodic benefit cost of the qualified defined-benefit pension plan (in millions):

Three Months Ended

Nine Months Ended

September 30,

September 30,

2017

2016

2017

2016
PENSION BENEFITS COST







Interest cost
$
0.3


$
0.3


$
0.9


$
0.9

Expected return on plan assets
(0.3
)

(0.4
)

(0.7
)

(1.4
)
Amortization of net actuarial loss
0.2


0.1


0.6


0.5

Settlement charge
—


1.2


—


1.2

Net periodic benefit cost
$
0.2


$
1.2


$
0.8


$
1.2