Selected Segment Data (Tables)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Quarter Ended September 30,						Nine Months Ended September 30,
Dollar amounts in millions	2016			2015			2016			2015
Net Sales
OSB	$	282.1		$	200.0		$	751.9		$	601.2
Siding	194.8			157.8			583.3			495.2
EWP	80.7			74.4			230.5			211.2
South America	31.7			26.8			103.2			101.4
Other	7.6			6.8			20.3			21.5
Intersegment Sales	(0.5		)	(0.9		)	(5.8		)	(0.9		)
	$	596.4		$	464.9		$	1,683.4		$	1,429.6
Operating profit (loss):
OSB	$	67.4		$	(11.1	)	$	126.7		$	(57.6	)
Siding	35.2			17.2			103.9			79.3
EWP	—			(0.9		)	(2.0		)	(7.3		)
South America	3.3			2.4			15.3			6.8
Other	(0.4		)	(0.6		)	(1.0		)	(2.5		)
Other operating credits and charges, net	—			(1.0		)	(11.4		)	(12.6		)
Loss on sale or impairment of long-lived assets, net	(0.3		)	(0.9		)	(1.0		)	(1.5		)
General corporate and other expenses, net	(26.9		)	(20.5		)	(78.1		)	(65.2		)
Interest expense, net of capitalized interest	(9.0		)	(8.4		)	(26.3		)	(23.1		)
Investment income	2.5			0.5			6.4			2.9
Loss on early debt extinguishment	(13.2		)	—			(13.2		)	—
Other non-operating items	(0.5		)	(3.7		)	1.4			(5.5		)
Income (loss) from continuing operations before taxes	58.1			(27.0		)	120.7			(86.3		)
Provision (benefit) for income taxes	(7.5		)	(2.4		)	13.1			(7.7		)
Income (loss) from continuing operations	$	65.6		$	(24.6	)	$	107.6		$	(78.6	)