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Defined Benefit Pension Plans
 3 Months Ended
Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract]  
Compensation and Employee Benefit Plans
DEFINED BENEFIT PENSION PLANS
The following table sets forth the net periodic pension cost for LP’s defined benefit pension plans during the quarter ended March 31, 2014 and 2013. The net periodic pension cost included the following components:
 
Three Months Ended March 31,
Dollar amounts in millions
2014
 
2013
Service cost
$
0.9

 
$
0.8

Interest cost
3.7

 
3.2

Expected return on plan assets
(4.2
)
 
(4.1
)
Amortization of prior service cost
—

 
0.1

Amortization of net loss
1.4

 
1.8

Net periodic pension cost
$
1.8

 
$
1.8


During the three months ended March 31, 2014 and 2013, LP recognized $1.8 million of pension expense for all of LP's defined benefit pension plans.
During the three months ended March 31, 2014, LP made $1.2 million in pension contributions for LP's Canadian benefit plans. LP expects to contribute $5.0 million to $7.0 million to its pension plans in 2014.