Annual report pursuant to Section 13 and 15(d)

QUARTERLY INFORMATION (unaudited) - Additional Information (Detail)

v2.4.1.9
QUARTERLY INFORMATION (unaudited) - Additional Information (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended
Dec. 31, 2014
item
Jun. 30, 2014
Mar. 31, 2013
Quarterly Financial Information [Line Items]      
Number of items impacting operating profit 2ups_NumberofItemsImpactingOperatingProfit    
Increase (decrease) in net income $ 670ups_IncreaseDecreaseInNetIncomeLoss $ 665ups_IncreaseDecreaseInNetIncomeLoss  
Basic   $ 0.73us-gaap_BasicEarningsPerShareAdjustmentProForma  
Diluted   $ 0.72us-gaap_EarningsPerShareDilutedProFormaAdjustment  
Increase (decrease) in basic and diluted earnings per share $ 0.74ups_IncreaseDecreaseInEarningsPerShareBasicAndDiluted    
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments   1,066us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1  
Impact of pension mark-to-market 1,062ups_MarkToMarketActivitiesNet    
U.S. Domestic Package      
Quarterly Financial Information [Line Items]      
Impact of pension mark-to-market 660ups_MarkToMarketActivitiesNet
/ us-gaap_EffectOfFourthQuarterEventsByTypeAxis
= ups_USDomesticPackageMember 		   
International Package      
Quarterly Financial Information [Line Items]      
Increase (decrease) in operating profit     39ups_IncreaseDecreaseInOperatingProfit
/ us-gaap_EffectOfFourthQuarterEventsByTypeAxis
= ups_InternationalPackageMember
Increase (decrease) in net income     36ups_IncreaseDecreaseInNetIncomeLoss
/ us-gaap_EffectOfFourthQuarterEventsByTypeAxis
= ups_InternationalPackageMember
Increase (decrease) in basic and diluted earnings per share     $ 0.04ups_IncreaseDecreaseInEarningsPerShareBasicAndDiluted
/ us-gaap_EffectOfFourthQuarterEventsByTypeAxis
= ups_InternationalPackageMember
Impact of pension mark-to-market 200ups_MarkToMarketActivitiesNet
/ us-gaap_EffectOfFourthQuarterEventsByTypeAxis
= ups_InternationalPackageMember 		   
Supply Chain & Freight      
Quarterly Financial Information [Line Items]      
Impact of pension mark-to-market 202ups_MarkToMarketActivitiesNet
/ us-gaap_EffectOfFourthQuarterEventsByTypeAxis
= ups_SupplyChainAndFreightMember 		   
Non-National Master Agreement (Non-NMA) [Domain]      
Quarterly Financial Information [Line Items]      
Increase (decrease) in net income 22ups_IncreaseDecreaseInNetIncomeLoss
/ us-gaap_CollectiveBargainingArrangementAxis
= ups_NonNationalMasterAgreementNonNMADomain 		   
Increase (decrease) in basic and diluted earnings per share $ 0.02ups_IncreaseDecreaseInEarningsPerShareBasicAndDiluted
/ us-gaap_CollectiveBargainingArrangementAxis
= ups_NonNationalMasterAgreementNonNMADomain 		   
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments 36us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
/ us-gaap_CollectiveBargainingArrangementAxis
= ups_NonNationalMasterAgreementNonNMADomain 		   
Non-National Master Agreement (Non-NMA) [Domain] | U.S. Domestic Package      
Quarterly Financial Information [Line Items]      
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments 33us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
/ us-gaap_CollectiveBargainingArrangementAxis
= ups_NonNationalMasterAgreementNonNMADomain
/ us-gaap_EffectOfFourthQuarterEventsByTypeAxis
= ups_USDomesticPackageMember 		   
Non-National Master Agreement (Non-NMA) [Domain] | International Package      
Quarterly Financial Information [Line Items]      
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments 1us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
/ us-gaap_CollectiveBargainingArrangementAxis
= ups_NonNationalMasterAgreementNonNMADomain
/ us-gaap_EffectOfFourthQuarterEventsByTypeAxis
= ups_InternationalPackageMember 		   
Non-National Master Agreement (Non-NMA) [Domain] | Supply Chain & Freight      
Quarterly Financial Information [Line Items]      
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments 2us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
/ us-gaap_CollectiveBargainingArrangementAxis
= ups_NonNationalMasterAgreementNonNMADomain
/ us-gaap_EffectOfFourthQuarterEventsByTypeAxis
= ups_SupplyChainAndFreightMember 		   
Supply Chain & Freight      
Quarterly Financial Information [Line Items]      
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments   82us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
/ us-gaap_CollectiveBargainingArrangementAxis
= ups_SupplyChainAndFreightMember 		 
International Package      
Quarterly Financial Information [Line Items]      
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments   27us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
/ us-gaap_CollectiveBargainingArrangementAxis
= ups_InternationalPackageMember 		 
U.S. Domestic Package      
Quarterly Financial Information [Line Items]      
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments   $ 957us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
/ us-gaap_CollectiveBargainingArrangementAxis
= ups_USDomesticPackageMember