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Employee Benefit Plans (Tables)
 3 Months Ended
Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]  
Schedule of Defined Benefit Plans Disclosures
The following table provides the components of the net periodic income of the qualified defined-benefit pension plan (in millions):

Three Months Ended

March 31,

2015

2014
PENSION BENEFITS



Interest cost
$
0.4


$
0.4

Expected return on plan assets
(0.5
)

(0.6
)
Amortization of net actuarial loss
0.1


0.1

Net periodic benefit income
$
—


$
(0.1
)