XML 36 R25.htm IDEA: XBRL DOCUMENT
v3.26.1

Commitments and Contingencies (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2026
Legal and Environmental Matters [Abstract] |
Schedule of Loss Contingencies by Contingency | Reserves for various contingent liabilities were as follows (dollar amounts in millions):
| March 31, 2026 |  | December 31, 2025
Environmental reserves | $ | 27 |  |  | $ | 27 |
Total contingencies | $ | 27 |  |  | $ | 27 |
Current portion (included in accounts payable and accrued liabilities) | (1) |  |  | (1) |
Long-term portion | $ | 26 |  |  | $ | 26 |

X
- Definition Legal And Environmental Matters [Abstract] + References No definition available. + Details
Name: | lpx_LegalAndEnvironmentalMattersAbstract
Namespace Prefix: | lpx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the loss contingencies that were reported in the period or disclosed as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-9 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-4 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-3 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-9 + Details
Name: | us-gaap_ScheduleOfLossContingenciesByContingencyTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration