Selected Segment Data (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Net sales	$ 1,892.5	$ 1,934.8	$ 2,085.2
Operating income (loss)	(63.3)	(77.6)	202.8
Other operating credits and charges, net	(16.3)	(7.5)	(3.8)
(Gain) loss on sale or impairment of long-lived assets	(2.1)	3.1	(0.2)
Other General Expense	(84.8)	(89.8)	(96.7)
Other Nonoperating Income (Expense)	(5.3)	(3.1)	29.5
Foreign currency gains (losses)	(5.3)	(3.1)	(5.3)
Investment income	4.4	5.5	10.3
Interest expense, net of capitalized interest	(31.2)	(29.8)	(36.0)
Loss from continuing operations before taxes	(88.7)	(100.6)	218.5
Provision (benefit) for income taxes	2.7	27.2	(41.1)
Income (loss) from continuing operations	(86.0)	(73.4)	177.4
Other Depreciation and Amortization	101.9	100.7	91.3
Payments to Acquire Property, Plant, and Equipment	113.8	80.1	75.6
OSB
Segment Reporting Information [Line Items]
Net sales	807.5	855.2	1,068.1
Operating income (loss)	(46.3)	(52.6)	230.3
Other Depreciation and Amortization	57.0	56.1	49.9
Payments to Acquire Property, Plant, and Equipment	26.5	26.3	36.5
Siding
Segment Reporting Information [Line Items]
Net sales	636.4	617.3	573.8
Operating income (loss)	93.2	79.8	85.8
Other Depreciation and Amortization	19.7	17.4	16.4
Payments to Acquire Property, Plant, and Equipment	75.7	33.0	22.8
Engineered Wood Products
Segment Reporting Information [Line Items]
Net sales	286.1	281.0	250.4
Operating income (loss)	(7.3)	(14.0)	(14.6)
Other Depreciation and Amortization	12.6	13.7	11.4
Payments to Acquire Property, Plant, and Equipment	4.1	5.3	2.2
South America
Segment Reporting Information [Line Items]
Net sales	134.9	150.4	171.5
Operating income (loss)	9.8	11.3	20.0
Other Depreciation and Amortization	7.9	9.1	10.5
Payments to Acquire Property, Plant, and Equipment	6.0	7.4	3.9
Other
Segment Reporting Information [Line Items]
Net sales	29.0	32.8	30.6
Operating income (loss)	(2.8)	(3.5)	(6.1)
Other Depreciation and Amortization	1.8	1.1	1.3
Payments to Acquire Property, Plant, and Equipment	1.1	0.0	0.0
Intersegment sales
Segment Reporting Information [Line Items]
Net sales	(1.4)	(1.9)	(9.2)
Unallocated Amount to Segment
Segment Reporting Information [Line Items]
Other Depreciation and Amortization	2.9	3.3	1.8
Payments to Acquire Property, Plant, and Equipment	$ 0.4	$ 8.1	$ 10.2