Selected Segment Data (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net sales	$ 2,233.4	$ 1,892.5	$ 1,934.8
Operating income (loss)	204.0	(63.3)	(77.6)
Other operating credits and charges, net	(17.4)	(16.3)	(7.5)
(Gain) loss on sale or impairment of long-lived assets	8.4	(2.1)	3.1
Other General Expense	(103.7)	(84.8)	(89.8)
Other Nonoperating Income (Expense)	(15.2)	(5.3)	(3.1)
Foreign currency gains (losses)	2.1	(5.3)	(3.1)
Investment income	8.2	4.4	5.5
Interest expense, net of capitalized interest	(32.1)	(31.2)	(29.8)
Loss from continuing operations before taxes	170.1	(88.7)	(100.6)
Provision (benefit) for income taxes	(19.8)	2.7	27.2
Income (loss) from continuing operations	150.3	(86.0)	(73.4)
Other Depreciation and Amortization	112.8	101.9	100.7
Payments to Acquire Property, Plant, and Equipment	124.8	113.8	80.1
OSB
Segment Reporting Information [Line Items]
Net sales	1,027.7	807.5	855.2
Operating income (loss)	186.2	(46.3)	(52.6)
Other Depreciation and Amortization	58.6	57.0	56.1
Payments to Acquire Property, Plant, and Equipment	49.3	26.5	26.3
Siding
Segment Reporting Information [Line Items]
Net sales	752.3	636.4	617.3
Operating income (loss)	126.1	93.2	79.8
Other Depreciation and Amortization	27.4	19.7	17.4
Payments to Acquire Property, Plant, and Equipment	49.9	75.7	33.0
Engineered Wood Products
Segment Reporting Information [Line Items]
Net sales	296.9	286.1	281.0
Operating income (loss)	(5.8)	(7.3)	(14.0)
Other Depreciation and Amortization	12.7	12.6	13.7
Payments to Acquire Property, Plant, and Equipment	5.3	4.1	5.3
South America
Segment Reporting Information [Line Items]
Net sales	136.9	134.9	150.4
Operating income (loss)	17.0	9.8	11.3
Other Depreciation and Amortization	8.6	7.9	9.1
Payments to Acquire Property, Plant, and Equipment	8.7	6.0	7.4
Other
Segment Reporting Information [Line Items]
Net sales	26.9	29.0	32.8
Operating income (loss)	(1.6)	(2.8)	(3.5)
Other Depreciation and Amortization	2.3	1.8	1.1
Payments to Acquire Property, Plant, and Equipment	8.1	1.1	0.0
Intersegment sales
Segment Reporting Information [Line Items]
Net sales	(7.3)	(1.4)	(1.9)
Unallocated Amount to Segment
Segment Reporting Information [Line Items]
Other Depreciation and Amortization	3.2	2.9	3.3
Payments to Acquire Property, Plant, and Equipment	$ 3.5	$ 0.4	$ 8.1