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CHARGES FOR RESTRUCTURING, CLOSURES AND ASSET IMPAIRMENTS - Additional Information (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 3 Months Ended
Dec. 31, 2013
Dec. 31, 2013
Fair Value, Inputs, Level 3 | Wood Products    
Impairment of long-lived assets $ 9us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_StatementBusinessSegmentsAxis
= wy_WoodProductsMember		  
Unallocated Items | Fair Value, Inputs, Level 2 and 3 | Coyote Springs Property    
Non-cash impairment charge   $ 356us-gaap_ImpairmentOfRealEstate
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= wy_FairValueInputsLevel2and3Member
/ us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis
= wy_MasterPlannedCommunityMember