Annual report pursuant to Section 13 and 15(d)

DEBT AND FINANCING ARRANGEMENTS DEBT AND FINANCING ARRANGEMENTS - Average Interest Rate (Details)

v2.4.1.9
DEBT AND FINANCING ARRANGEMENTS DEBT AND FINANCING ARRANGEMENTS - Average Interest Rate (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Apr. 01, 2014
Dec. 31, 2013
Debt Instrument [Line Items]      
Document Fiscal Year Focus 2014    
Principal Value $ 11,586us-gaap_DebtInstrumentFaceAmount    
Senior notes | 4.50% senior notes      
Debt Instrument [Line Items]      
Maturity Jan. 01, 2013    
Senior notes | 3.875% senior notes      
Debt Instrument [Line Items]      
Principal Value 1,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= ups_A3875SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
1,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= ups_A3875SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
 
Maturity Jan. 01, 2014    
Average Effective Percentage Rate 0.94%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A3875SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
  0.97%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A3875SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
Senior notes | 1.125% senior notes      
Debt Instrument [Line Items]      
Principal Value 375us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= ups_A1125SeniornotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
   
Maturity Jan. 01, 2017    
Average Effective Percentage Rate 0.60%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A1125SeniornotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
  0.64%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A1125SeniornotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
Senior notes | 5.50% senior notes      
Debt Instrument [Line Items]      
Principal Value 750us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= ups_A550SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
   
Maturity Jan. 01, 2018    
Average Effective Percentage Rate 2.49%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A550SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
  2.53%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A550SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
Senior notes | 5.125% senior notes      
Debt Instrument [Line Items]      
Principal Value 1,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= ups_A5125SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
   
Maturity Jan. 01, 2019    
Average Effective Percentage Rate 1.97%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A5125SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
  2.01%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A5125SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
Senior notes | 3.125% senior notes      
Debt Instrument [Line Items]      
Principal Value 1,500us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= ups_A3125SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
   
Maturity Jan. 01, 2021    
Average Effective Percentage Rate 1.06%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A3125SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
  1.11%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A3125SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
Senior notes | 2.45% senior notes      
Debt Instrument [Line Items]      
Principal Value $ 1,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= ups_A245SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
   
Maturity Jan. 01, 2022    
Average Effective Percentage Rate 0.82%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A245SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
  0.86%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= ups_A245SeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember