Defined Benefit Pension Plans

9 Months Ended

Sep. 30, 2011

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 September 30, 2011 and 2010. The net periodic pension cost included the following components:

	Quarter Ended September 30,						Nine Months Ended September 30,
Dollar amounts in millions	2011			2010			2011			2010
Service cost	$	0.8		$	0.8		$	2.4		$	2.5
Interest cost	4.0			4.2			12.0			13.9
Expected return on plan assets	(4.5		)	(4.8		)	(13.5		)	(15.4		)
Amortization of prior service cost	0.1			0.1			0.3			0.3
Amortization of net loss	1.1			1.2			3.3			4.0
Net periodic pension cost	$	1.5		$	1.5		$	4.5		$	5.3

During the nine months ended September 30, 2011 and 2010, LP recognized $4.5 million and $5.3 million of pension expense for all of LP’s defined benefit pension plans.

During the nine months ended September 30, 2011, LP made $11.0 million in pension contributions for LP’s defined benefit plans. LP presently anticipates making approximately $0.5 million in additional pension contributions for the plans during the remainder of 2011.