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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure |  |  |  |
Pay vs Performance Disclosure, Table | PAY VERSUS PERFORMANCE The table below summarizes the compensation actually paid to each of the listed NEOs and company financial performance measures for the four years ended December 31, 2023.
​ | Year | ​ | ​ | Summary Compensation Table Total for PEO(1) ($) | ​ | ​ | Compensation Actually Paid to PEO(2)(3) ($) | ​ | ​ | Average Summary Compensation Table Total for Non-PEO NEOs(1) ($) | ​ | ​ | Average Compensation Actually paid to Non-PEO NEOs(2)(3) ($) | ​ | ​ | Value of Initial Fixed $100 Investment Based on:(4) | ​ | ​ | Net Income ($ Million) | ​ | ​ | Company Adjusted EBITDA ($ Million) | ​
​ | Company TSR ($) | ​ | ​ | Peer Group TSR ($) | ​
​ | 2023 | ​ | ​ | ​ | ​ | 10,670,593 | ​ | ​ | ​ | ​ | ​ | 10,495,230 | ​ | ​ | ​ | ​ | ​ | 2,235,201 | ​ | ​ | ​ | ​ | ​ | 2,272,644 | ​ | ​ | ​ | ​ | ​ | 253.70 | ​ | ​ | ​ | ​ | ​ | 172.49 | ​ | ​ | ​ | ​ | ​ | 178 | ​ | ​ | ​ | ​ | ​ | 478 | ​ | ​
​ | 2022 | ​ | ​ | ​ | ​ | 8,682,313 | ​ | ​ | ​ | ​ | ​ | (7,732,568) | ​ | ​ | ​ | ​ | ​ | 2,042,305 | ​ | ​ | ​ | ​ | ​ | (224,312) | ​ | ​ | ​ | ​ | ​ | 208.61 | ​ | ​ | ​ | ​ | ​ | 137.88 | ​ | ​ | ​ | ​ | ​ | 1,083 | ​ | ​ | ​ | ​ | ​ | 1,389 | ​ | ​
​ | 2021 | ​ | ​ | ​ | ​ | 9,158,272 | ​ | ​ | ​ | ​ | ​ | 34,346,704 | ​ | ​ | ​ | ​ | ​ | 1,943,418 | ​ | ​ | ​ | ​ | ​ | 5,334,446 | ​ | ​ | ​ | ​ | ​ | 272.24 | ​ | ​ | ​ | ​ | ​ | 180.45 | ​ | ​ | ​ | ​ | ​ | 1,373 | ​ | ​ | ​ | ​ | ​ | 1,877 | ​ | ​
​ | 2020 | ​ | ​ | ​ | ​ | 7,381,365 | ​ | ​ | ​ | ​ | ​ | 8,389,602 | ​ | ​ | ​ | ​ | ​ | 1,577,268 | ​ | ​ | ​ | ​ | ​ | 1,673,812 | ​ | ​ | ​ | ​ | ​ | 127.73 | ​ | ​ | ​ | ​ | ​ | 124.52 | ​ | ​ | ​ | ​ | ​ | 497 | ​ | ​ | ​ | ​ | ​ | 757 | ​ | ​
​ (1) W. Bradley Southern is our principal executive officer (“PEO”) for each year presented. The individuals comprising the Non-PEO NEOs for each presented year are listed below. ​
2023 | ​ | ​ | 2022 | ​ | ​ | 2021 and 2020 | ​
Alan J.M. Haughie | ​ | ​ | Alan J.M. Haughie | ​ | ​ | Alan J.M. Haughie | ​
Jason P. Ringblom | ​ | ​ | Jason P. Ringblom | ​ | ​ | Jason P. Ringblom | ​
Nicole C. Daniel | ​ | ​ | Nicole C. Daniel | ​ | ​ | Neil Sherman | ​
Michael W. Blosser | ​ | ​ | Michael W. Blosser | ​ | ​ | Michael J. Sims | ​
​ | ​ | ​ | Robin H. Everhart | ​ | ​ | ​ | ​
​ (2) The amounts shown for “Compensation Actually Paid” were calculated in accordance with Item 402(v) of Regulation S-K and do not reflect compensation actually earned, realized, or received by LP’s NEOs. These amounts reflect the total compensation reported in the “Summary Compensation Table” with certain adjustments as described in footnote 3 below. ​ (3) “Compensation Actually Paid” for 2023 reflects the exclusions and inclusions of certain amounts for the PEO and the Non-PEO NEOs as set forth below. Equity values are calculated in accordance with FASB ASC Topic 718 using the same assumption methodologies used to calculate the grant date fair value of awards for purposes of the Summary Compensation Table. At the grant date for each PSU award, the relevant performance metrics are assumed to be achieved at the target level (100% of the target award amount). The fair value of unvested PSUs for each year used in the calculation of “Compensation Actually Paid” is based on the probable outcome of the applicable performance conditions as of the last day of the fiscal year. As of December 31, 2023, the fair value of the unvested PSUs changed from the grant date primarily due to the change in stock price and our probable performance based on the performance metrics applicable to those PSUs awards. As of December 31, 2023, the 2021 PSUs were expected to vest at the target award amount as a result of the October 2023 modification to the ​
​ | Summary Compensation Table Total for PEO ($) | ​ | ​ | Deduct Change in Pension Value for PEO ($) | ​ | ​ | Pension Benefits Adjustments for PEO ($) | ​ | ​ | Exclusion of Stock Awards for PEO ($) | ​ | ​ | Inclusion of Equity Values for PEO ($) | ​ | ​ | Compensation Actually Paid to PEO ($) | ​
​ | 10,670,593 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (7,577,416) | ​ | ​ | 7,402,053 | ​ | ​ | 10,495,230 | ​
​ | Average Summary Compensation Table Total for Non-PEO NEOs ($) | ​ | ​ | Deduct Change in Pension Value for Non-PEO NEOs ($) | ​ | ​ | Pension Benefits Adjustments for Non-PEO NEOs ($) | ​ | ​ | Exclusion of Stock Awards for Non-PEO NEOs ($) | ​ | ​ | Inclusion of Equity Values for Non-PEO NEOs ($) | ​ | ​ | Average Compensation Actually Paid to Non-PEO NEOs ($) | ​
​ | 2,235,201 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (1,214,908) | ​ | ​ | 1,252,351 | ​ | ​ | 2,272,644 | ​
The amounts in the “Inclusion of Equity Values” in the tables above are derived from the amounts set forth in the following tables:
​ | Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for PEO ($) | ​ | ​ | Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for PEO ($) | ​ | ​ | Vesting-Date Fair Value of Equity Awards Granted During Year that Vested During Year for PEO ($) | ​ | ​ | Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for PEO ($) | ​ | ​ | Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year for PEO ($) | ​ | ​ | Value of Dividends or Other Earnings Paid on Stock or Option Awards Not Otherwise Included for PEO ($) | ​ | ​ | Total– Inclusion of Equity Values for PEO ($) | ​
​ | 2,157,128 | ​ | ​ | 3,537,303 | ​ | ​ | — | ​ | ​ | 1,518,131 | ​ | ​ | — | ​ | ​ | 189,491 | ​ | ​ | 7,402,053 | ​
​ | Average Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for Non-PEO NEOs ($) | ​ | ​ | Average Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for Non-PEO NEOs ($) | ​ | ​ | Average Vesting- Date Fair Value of Equity Awards Granted During Year that Vested During Year for Non-PEO NEOs ($) | ​ | ​ | Average Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for Non-PEO NEOs ($) | ​ | ​ | Average Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year for Non-PEO NEOs ($) | ​ | ​ | Average Value of Dividends or Other Earnings Paid on Stock or Option Awards Not Otherwise Included for Non-PEO NEOs ($) | ​ | ​ | Total–Average Inclusion of Equity Values for Non-PEO NEOs ($) | ​
​ | 445,131 | ​ | ​ | 558,019 | ​ | ​ | — | ​ | ​ | 219,604 | ​ | ​ | — | ​ | ​ | 29,597 | ​ | ​ | 1,252,351 | ​
​ (4) The “Peer Group TSR” set forth in this table utilizes the following published index: S&P 500 Building Products. TSR for both LP and the peer group is based on an initial $100 investment, measured on a cumulative basis from the market close on December 31, 2019, through and including the end of the fiscal year for which TSR is being presented in the table. ​ |  |  |
Company Selected Measure Name | Adjusted EBITDA |  |  |
Named Executive Officers, Footnote | (1) W. Bradley Southern is our principal executive officer (“PEO”) for each year presented. The individuals comprising the Non-PEO NEOs for each presented year are listed below. ​
2023 | ​ | ​ | 2022 | ​ | ​ | 2021 and 2020 | ​
Alan J.M. Haughie | ​ | ​ | Alan J.M. Haughie | ​ | ​ | Alan J.M. Haughie | ​
Jason P. Ringblom | ​ | ​ | Jason P. Ringblom | ​ | ​ | Jason P. Ringblom | ​
Nicole C. Daniel | ​ | ​ | Nicole C. Daniel | ​ | ​ | Neil Sherman | ​
Michael W. Blosser | ​ | ​ | Michael W. Blosser | ​ | ​ | Michael J. Sims | ​
​ | ​ | ​ | Robin H. Everhart | ​ | ​ | ​ | ​
Peer Group Issuers, Footnote | (4) The “Peer Group TSR” set forth in this table utilizes the following published index: S&P 500 Building Products. TSR for both LP and the peer group is based on an initial $100 investment, measured on a cumulative basis from the market close on December 31, 2019, through and including the end of the fiscal year for which TSR is being presented in the table. |  |  |
PEO Total Compensation Amount | $ 10,670,593 | $ 8,682,313 | $ 9,158,272 | $ 7,381,365
PEO Actually Paid Compensation Amount | $ 10,495,230 | (7,732,568) | 34,346,704 | 8,389,602
Adjustment To PEO Compensation, Footnote | (2) The amounts shown for “Compensation Actually Paid” were calculated in accordance with Item 402(v) of Regulation S-K and do not reflect compensation actually earned, realized, or received by LP’s NEOs. These amounts reflect the total compensation reported in the “Summary Compensation Table” with certain adjustments as described in footnote 3 below. ​ (3) “Compensation Actually Paid” for 2023 reflects the exclusions and inclusions of certain amounts for the PEO and the Non-PEO NEOs as set forth below. Equity values are calculated in accordance with FASB ASC Topic 718 using the same assumption methodologies used to calculate the grant date fair value of awards for purposes of the Summary Compensation Table. At the grant date for each PSU award, the relevant performance metrics are assumed to be achieved at the target level (100% of the target award amount). The fair value of unvested PSUs for each year used in the calculation of “Compensation Actually Paid” is based on the probable outcome of the applicable performance conditions as of the last day of the fiscal year. As of December 31, 2023, the fair value of the unvested PSUs changed from the grant date primarily due to the change in stock price and our probable performance based on the performance metrics applicable to those PSUs awards. As of December 31, 2023, the 2021 PSUs were expected to vest at the target award amount as a result of the October 2023 modification to the ​
​ | Summary Compensation Table Total for PEO ($) | ​ | ​ | Deduct Change in Pension Value for PEO ($) | ​ | ​ | Pension Benefits Adjustments for PEO ($) | ​ | ​ | Exclusion of Stock Awards for PEO ($) | ​ | ​ | Inclusion of Equity Values for PEO ($) | ​ | ​ | Compensation Actually Paid to PEO ($) | ​
​ | 10,670,593 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (7,577,416) | ​ | ​ | 7,402,053 | ​ | ​ | 10,495,230 | ​
The amounts in the “Inclusion of Equity Values” in the tables above are derived from the amounts set forth in the following tables:
​ | Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for PEO ($) | ​ | ​ | Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for PEO ($) | ​ | ​ | Vesting-Date Fair Value of Equity Awards Granted During Year that Vested During Year for PEO ($) | ​ | ​ | Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for PEO ($) | ​ | ​ | Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year for PEO ($) | ​ | ​ | Value of Dividends or Other Earnings Paid on Stock or Option Awards Not Otherwise Included for PEO ($) | ​ | ​ | Total– Inclusion of Equity Values for PEO ($) | ​
​ | 2,157,128 | ​ | ​ | 3,537,303 | ​ | ​ | — | ​ | ​ | 1,518,131 | ​ | ​ | — | ​ | ​ | 189,491 | ​ | ​ | 7,402,053 | ​
Non-PEO NEO Average Total Compensation Amount | $ 2,235,201 | 2,042,305 | 1,943,418 | 1,577,268
Non-PEO NEO Average Compensation Actually Paid Amount | $ 2,272,644 | (224,312) | 5,334,446 | 1,673,812
Adjustment to Non-PEO NEO Compensation Footnote | (2) The amounts shown for “Compensation Actually Paid” were calculated in accordance with Item 402(v) of Regulation S-K and do not reflect compensation actually earned, realized, or received by LP’s NEOs. These amounts reflect the total compensation reported in the “Summary Compensation Table” with certain adjustments as described in footnote 3 below. ​ (3) “Compensation Actually Paid” for 2023 reflects the exclusions and inclusions of certain amounts for the PEO and the Non-PEO NEOs as set forth below. Equity values are calculated in accordance with FASB ASC Topic 718 using the same assumption methodologies used to calculate the grant date fair value of awards for purposes of the Summary Compensation Table. At the grant date for each PSU award, the relevant performance metrics are assumed to be achieved at the target level (100% of the target award amount). The fair value of unvested PSUs for each year used in the calculation of “Compensation Actually Paid” is based on the probable outcome of the applicable performance conditions as of the last day of the fiscal year. As of December 31, 2023, the fair value of the unvested PSUs changed from the grant date primarily due to the change in stock price and our probable performance based on the performance metrics applicable to those PSUs awards. As of December 31, 2023, the 2021 PSUs were expected to vest at the target award amount as a result of the October 2023 modification to the
​ | Average Summary Compensation Table Total for Non-PEO NEOs ($) | ​ | ​ | Deduct Change in Pension Value for Non-PEO NEOs ($) | ​ | ​ | Pension Benefits Adjustments for Non-PEO NEOs ($) | ​ | ​ | Exclusion of Stock Awards for Non-PEO NEOs ($) | ​ | ​ | Inclusion of Equity Values for Non-PEO NEOs ($) | ​ | ​ | Average Compensation Actually Paid to Non-PEO NEOs ($) | ​
​ | 2,235,201 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (1,214,908) | ​ | ​ | 1,252,351 | ​ | ​ | 2,272,644 | ​
The amounts in the “Inclusion of Equity Values” in the tables above are derived from the amounts set forth in the following tables:
​ | Average Year-End Fair Value of Equity Awards Granted During Year That Remained Unvested as of Last Day of Year for Non-PEO NEOs ($) | ​ | ​ | Average Change in Fair Value from Last Day of Prior Year to Last Day of Year of Unvested Equity Awards for Non-PEO NEOs ($) | ​ | ​ | Average Vesting- Date Fair Value of Equity Awards Granted During Year that Vested During Year for Non-PEO NEOs ($) | ​ | ​ | Average Change in Fair Value from Last Day of Prior Year to Vesting Date of Unvested Equity Awards that Vested During Year for Non-PEO NEOs ($) | ​ | ​ | Average Fair Value at Last Day of Prior Year of Equity Awards Forfeited During Year for Non-PEO NEOs ($) | ​ | ​ | Average Value of Dividends or Other Earnings Paid on Stock or Option Awards Not Otherwise Included for Non-PEO NEOs ($) | ​ | ​ | Total–Average Inclusion of Equity Values for Non-PEO NEOs ($) | ​
​ | 445,131 | ​ | ​ | 558,019 | ​ | ​ | — | ​ | ​ | 219,604 | ​ | ​ | — | ​ | ​ | 29,597 | ​ | ​ | 1,252,351 | ​
Compensation Actually Paid vs. Total Shareholder Return |  |  |  |
Compensation Actually Paid vs. Net Income |  |  |  |
Compensation Actually Paid vs. Company Selected Measure |  |  |  |
Total Shareholder Return Vs Peer Group |  |  |  |
Tabular List, Table | FINANCIAL PERFORMANCE MEASURES USED TO LINK COMPENSATION ACTUALLY PAID TO NEOS FOR THE MOST RECENTLY COMPLETED FISCAL YEAR TO COMPANY PERFORMANCE For the fiscal year ended December 31, 2023, our Compensation Committee identified the performance measures listed below as the most important in setting compensation for the NEOs. Adjusted EBITDA is the key performance measure used in setting performance goals for our PSUs, which comprise a significant portion of the NEOs’ compensation mix. For additional detail on Adjusted EBITDA see “Compensation of Executive Officers—Compensation Disclosure and Analysis—Section IV: Elements and Philosophy of Executive Compensation—Long-Term Equity Incentive Compensation” on page 47.
| ​
Adjusted EBITDA (Company and Segment basis) | ​
Economic Profit (Company and Segment basis) | ​
Company Operating Cash Flow | ​
Relative Total Shareholder Return | ​
Total Shareholder Return Amount | $ 253.7 | 208.61 | 272.24 | 127.73
Peer Group Total Shareholder Return Amount | 172.49 | 137.88 | 180.45 | 124.52
Net Income (Loss) | $ 178,000,000 | $ 1,083,000,000 | $ 1,373,000,000 | $ 497,000,000
Company Selected Measure Amount | 478,000,000 | 1,389,000,000 | 1,877,000,000 | 757,000,000
PEO Name | W. Bradley Southern |  |  |
Measure:: 1 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Adjusted EBITDA (Company and Segment basis) |  |  |
Measure:: 2 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Economic Profit (Company and Segment basis) |  |  |
Measure:: 3 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Company Operating Cash Flow |  |  |
Measure:: 4 |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Name | Relative Total Shareholder Return |  |  |
PEO | Pension Adjustments Pension Value In Summary Compensation Table [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  |  |  |
PEO | Total Pension Adjustments [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  |  |  |
PEO | Equity Awards Value In Summary Compensation Table (Grant Date Value) [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | (7,577,416) |  |  |
PEO | Total Equity Awards Adjustments [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 7,402,053 |  |  |
PEO | Year-end Fair Value Of Awards Granted In The Current Fiscal Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 2,157,128 |  |  |
PEO | Change In Fair Value Of Outstanding And Unvested Awards Granted In Prior Fiscal Years [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 3,537,303 |  |  |
PEO | Change In Fair Value As Of Vesting Date Of Current Year Awards Vested During Current Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  |  |  |
PEO | Change In Fair Value As Of Vesting Date Of Prior Year Awards Vested During Current Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 1,518,131 |  |  |
PEO | Fair Value At Last Day of Prior Year of Equity Awards Forfeited During Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  |  |  |
PEO | Dividends Or Other Earnings Paid On Equity Awards Not Otherwise Reflected In Fair Value [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 189,491 |  |  |
Non-PEO NEO | Pension Adjustments Pension Value In Summary Compensation Table [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  |  |  |
Non-PEO NEO | Total Pension Adjustments [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  |  |  |
Non-PEO NEO | Equity Awards Value In Summary Compensation Table (Grant Date Value) [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | (1,214,908) |  |  |
Non-PEO NEO | Total Equity Awards Adjustments [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 1,252,351 |  |  |
Non-PEO NEO | Year-end Fair Value Of Awards Granted In The Current Fiscal Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 445,131 |  |  |
Non-PEO NEO | Change In Fair Value Of Outstanding And Unvested Awards Granted In Prior Fiscal Years [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 558,019 |  |  |
Non-PEO NEO | Change In Fair Value As Of Vesting Date Of Current Year Awards Vested During Current Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  |  |  |
Non-PEO NEO | Change In Fair Value As Of Vesting Date Of Prior Year Awards Vested During Current Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 219,604 |  |  |
Non-PEO NEO | Fair Value At Last Day of Prior Year of Equity Awards Forfeited During Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount |  |  |  |
Non-PEO NEO | Dividends Or Other Earnings Paid On Equity Awards Not Otherwise Reflected In Fair Value [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | $ 29,597 |  |  |

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