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Discontinued Operations - Narrative (Details) $ in Millions |  | 1 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 01, 2022 USD ($) | Mar. 31, 2022 USD ($) operatingPlant | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) joint_venture | Jun. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Number Of Joint Ventures | operatingPlant |  | 2 |  |  |
Equity Method Investment, Realized Gain (Loss) on Disposal |  |  | $ 6 | $ 157 |
Proceeds from divestiture of business |  |  | 0 | $ 265 |
Discontinued Operations, Disposed of by Sale | EWP Segment Assets |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 50.00% | 50.00%
Number Of Joint Ventures | joint_venture |  |  |  | 2 |
Proceeds from Divestiture of Interest in Joint Venture |  |  |  | $ 59 |
Resolute Forest Products Inc. | Discontinued Operations, Disposed of by Sale |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Proceeds from Divestiture of Interest in Joint Venture |  | $ 59 |  |  |
Equity Method Investment, Realized Gain (Loss) on Disposal |  | $ 39 |  |  |
EWP Segment Assets | Discontinued Operations, Disposed of by Sale |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration | $ 217 |  |  |  |
Direct transaction costs |  |  | 12 |  |
Proceeds from divestiture of business |  |  | $ 205 | $ 202 |
Gain on sale | $ 118 |  |  |  |

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