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Earnings per Share (Tables) (Tables) | 6 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | Basic earnings per share is based upon the weighted-average number of shares of common stock outstanding. Diluted earnings per share is based upon the weighted-average number of shares of common stock outstanding, plus all potentially dilutive securities that were assumed to be converted into common shares at the beginning of the period under the treasury stock method. This method requires that the effect of potentially dilutive common stock equivalents (stock options, stock-settled appreciation rights (SSARs), restricted stock units, and performance stock units) be excluded from the calculation of diluted earnings per share for the periods in which losses are reported because the effect is anti-dilutive. The following table sets forth the computation of basic and diluted earnings per share (in millions, except per share amounts):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Net income attributed to LP |  |  |  |  |  |  |
Weighted average common shares outstanding - basic | 101 |  |  | 112 |  |  | 103 |  |  | 112 |
Dilutive effect of employee stock plans | 1 |  |  | 1 |  |  | 1 |  |  | 1 |
Shares used for diluted earnings per share | 102 |  |  | 113 |  |  | 104 |  |  | 113 |
Earnings per share: |  |  |  |  |  |  |
Basic earnings | $ | 4.93 |  |  | $ | 0.29 |  |  | $ | 7.90 |  |  | $ | 0.59 |
Diluted earnings | $ | 4.90 |  |  | $ | 0.29 |  |  | $ | 7.85 |  |  | $ | 0.58 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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