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HIGHER AND BETTER USE TIMBERLANDS AND REAL ESTATE DEVELOPMENT INVESTMENTS - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Jan. 30, 2026 | Mar. 31, 2026
Inventory [Line Items] |  |
HBU properties assumed in the merger with PotlatchDeltic Corporation |  | $ 59,563
Potlatchdeltic Merger |  |
Inventory [Line Items] |  |
HBU properties assumed in the merger with PotlatchDeltic Corporation | $ 59,600 |

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- Definition Inventory, Real Estate, Land and Land Development Costs HBU properties + References No definition available. + Details
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Namespace Prefix: | ryn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ryn_InvestingActivitiesAxis=ryn_PotlatchDelticMergerSwapsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |