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EARNINGS PER SHARE ATTRIBUTABLE TO INTERNATIONAL PAPER COMPANY COMMON SHAREHOLDERS (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Earnings Per Share, Basic and Diluted [Line Items]    
Earnings (loss) from continuing operations $ 313us-gaap_IncomeLossFromContinuingOperations $ (88)us-gaap_IncomeLossFromContinuingOperations
Effect of dilutive securities (a) 0us-gaap_DilutiveSecurities [1] 0us-gaap_DilutiveSecurities [1]
Earnings (loss) from continuing operations - assuming dilution $ 313us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted $ (88)us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted
Average common shares outstanding 421.2us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 435.6us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Average common shares outstanding - assuming dilution 423.7us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 435.6us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Basic earnings (loss) from continuing operations per common share $ 0.74us-gaap_IncomeLossFromContinuingOperationsPerBasicShare $ (0.20)us-gaap_IncomeLossFromContinuingOperationsPerBasicShare
Diluted earnings (loss) from continuing operations per common share $ 0.74us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare $ (0.20)us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Restricted Stock Performance Share Plan [Member]    
Earnings Per Share, Basic and Diluted [Line Items]    
Effect of dilutive securities (in shares) 2.5us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
[1] 0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
[1]
[1] Securities are not included in the table in periods when antidilutive.