Consolidated Statement of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net sales	$ 467.8	$ 350.6	$ 1,257.1	$ 1,044.7
Operating costs and expenses:
Cost of sales	369.3	322.0	1,042.5	953.3
Depreciation and amortization	18.9	19.6	55.9	61.2
Selling and administrative	30.6	26.5	92.6	82.9
Loss on sale or impairment of long-lived assets, net	4.3	65.0	4.5	73.0
Other operating credits and charges, net	1.2	(9.8)	1.2	(11.2)
Total operating costs and expenses	424.3	423.3	1,196.7	1,159.2
Income (loss) from operations	43.5	(72.7)	60.4	(114.5)
Non-operating income (expense):
Interest expense, net of capitalized interest	(10.7)	(14.2)	(36.4)	(42.6)
Investment income	4.1	16.7	11.7	24.2
Early debt extinguishment	0	0	(52.2)	0
Other non-operating items	0.4	(4.0)	(2.3)	(1.6)
Total non-operating expense	(6.2)	(1.5)	(79.2)	(20.0)
Income (loss) from continuing operations before taxes and equity in (income) losses of unconsolidated affiliates	37.3	(74.2)	(18.8)	(134.5)
Provision (benefit) for income taxes	7.9	(20.9)	(4.4)	(36.1)
Equity in (income) loss of unconsolidated affiliates	(2.0)	6.0	2.6	16.7
Income (loss) from continuing operations	31.4	(59.3)	(17.0)	(115.1)
Loss from discontinued operations before taxes	(0.2)	(10.3)	(0.5)	(14.4)
Benefit for income taxes	(0.1)	(4.0)	(0.2)	(5.6)
Loss from discontinued operations	(0.1)	(6.3)	(0.3)	(8.8)
Net income (loss)	31.3	(65.6)	(17.3)	(123.9)
Less: Net income attributed to non-controlling interest	0	0	0	0.2
Income (loss) attributed to Louisiana-Pacific Corporation	31.3	(65.6)	(17.3)	(124.1)
Income (loss) per share of common stock (basic):
Income (loss) from continuing operations	$ 0.23	$ (0.44)	$ (0.13)	$ (0.87)
Loss from discontinued operations	$ 0.00	$ (0.05)	$ 0.00	$ (0.07)
Net income (loss) per share	$ 0.23	$ (0.49)	$ (0.13)	$ (0.94)
Net income (loss) per share of common stock (diluted):
Income (loss) from continuing operations	$ 0.22	$ (0.44)	$ (0.13)	$ (0.87)
Loss from discontinued operations	$ 0.00	$ (0.05)	$ 0.00	$ (0.07)
Net income (loss) per share	$ 0.22	$ (0.49)	$ (0.13)	$ (0.94)
Average shares of stock outstanding - basic	137.1	134.5	136.9	132.4
Average shares of stock outstanding - diluted	142.6	134.5	136.9	132.4
Amounts attributed to LP Corporation common shareholders
Income (loss) from continuing operations, net of tax	31.4	(59.3)	(17.0)	(115.3)
Loss from discontinued operations, net of tax	(0.1)	(6.3)	(0.3)	(8.8)
Income (loss) attributed to Louisiana-Pacific Corporation	$ 31.3	$ (65.6)	$ (17.3)	$ (124.1)