Annual report pursuant to Section 13 and 15(d)

MULTIEMPLOYER EMPLOYEE BENEFIT PLANS - UPS's Participation in Multiemployer Plans (Detail)

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MULTIEMPLOYER EMPLOYEE BENEFIT PLANS - UPS's Participation in Multiemployer Plans (Detail) (USD $)
In Millions, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 30, 2012
Group
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Multiemployer Plans, Pension
       
Multiemployer Plans [Line Items]        
Multiemployer pension plans, maximum term to forecast a funding deficiency in the orange zone   6 years    
UPS Contribution   $ 1,325 $ 1,243 $ 1,186
Multiemployer plans, number of beneficiary groups 2      
Multiemployer plans, withdrawal liability 2,162      
Multiemployer Plans, period to repay withdrawal liability 50 years      
Multiemployer plans, present value of withdrawal liability 896      
Discount rate 4.25%      
Multiemployer Plans, Pension | Alaska Teamster-Employer Pension Plan
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   92-6003463-024    
Pension Protection Act Zone Status   Red Red  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   4 4 3
Surcharge Imposed   No    
Multiemployer Plans, Pension | Automotive Industries Pension Plan
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   94-1133245-001    
Pension Protection Act Zone Status   Red Red  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   4 4 4
Surcharge Imposed   No    
Multiemployer Plans, Pension | Central Pennsylvania Teamsters Defined Benefit Plan
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   23-6262789-001    
Pension Protection Act Zone Status   Yellow Green  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   29 27 26
Surcharge Imposed   No    
Multiemployer Plans, Pension | Employer-Teamsters Local Nos. 175 & 505 Pension Trust Fund
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   55-6021850-001    
Pension Protection Act Zone Status   Green Green  
FIP/RP Status Pending/ Implemented   No    
UPS Contribution   9 8 8
Surcharge Imposed   No    
Multiemployer Plans, Pension | Hagerstown Motor Carriers and Teamsters Pension Fund
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   52-6045424-001    
Pension Protection Act Zone Status   Red Red  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   5 5 4
Surcharge Imposed   No    
Multiemployer Plans, Pension | I.A.M. National Pension Fund / National Pension Plan
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   51-6031295-002    
Pension Protection Act Zone Status   Green Green  
FIP/RP Status Pending/ Implemented   No    
UPS Contribution   24 25 24
Surcharge Imposed   No    
Multiemployer Plans, Pension | International Brotherhood of Teamsters Union Local No. 710 Pension Fund
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   36-2377656-001    
Pension Protection Act Zone Status   Green Yellow  
FIP/RP Status Pending/ Implemented   No    
UPS Contribution   75 74 70
Surcharge Imposed   No    
Multiemployer Plans, Pension | Local 705, International Brotherhood of Teamsters Pension Plan
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   36-6492502-001    
Pension Protection Act Zone Status   Red Yellow  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   46 58 56
Surcharge Imposed   No    
Multiemployer Plans, Pension | Local 804 I.B.T. & Local 447 I.A.M.—UPS Multiemployer Retirement Plan
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   51-6117726-001    
Pension Protection Act Zone Status   Red Red  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   87 84 84
Surcharge Imposed   No    
Multiemployer Plans, Pension | Milwaukee Drivers Pension Trust Fund
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   39-6045229-001    
Pension Protection Act Zone Status   Green Green  
FIP/RP Status Pending/ Implemented   No    
UPS Contribution   26 26 24
Surcharge Imposed   No    
Multiemployer Plans, Pension | New England Teamsters & Trucking Industry Pension Fund
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   04-6372430-001    
Pension Protection Act Zone Status   Red Red  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   124 124 112
Surcharge Imposed   No    
Multiemployer Plans, Pension | New York State Teamsters Conference Pension and Retirement Fund
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   16-6063585-074    
Pension Protection Act Zone Status   Red Red  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   65 57 52
Surcharge Imposed   No    
Multiemployer Plans, Pension | Teamster Pension Fund of Philadelphia and Vicinity
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   23-1511735-001    
Pension Protection Act Zone Status   Yellow Yellow  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   44 41 39
Surcharge Imposed   No    
Multiemployer Plans, Pension | Teamsters Joint Council No. 83 of Virginia Pension Fund
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   54-6097996-001    
Pension Protection Act Zone Status   Yellow Yellow  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   44 41 38
Surcharge Imposed   No    
Multiemployer Plans, Pension | Teamsters Local 639—Employers Pension Trust
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   53-0237142-001    
Pension Protection Act Zone Status   Green Green  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   36 33 31
Surcharge Imposed   No    
Multiemployer Plans, Pension | Teamsters Negotiated Pension Plan
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   43-6196083-001    
Pension Protection Act Zone Status   Red Red  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   24 22 20
Surcharge Imposed   No    
Multiemployer Plans, Pension | Truck Drivers and Helpers Local Union No. 355 Retirement Pension Plan
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   52-6043608-001    
Pension Protection Act Zone Status   Yellow Yellow  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   14 12 12
Surcharge Imposed   No    
Multiemployer Plans, Pension | United Parcel Service, Inc.—Local 177, I.B.T. Multiemployer Retirement Plan
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   13-1426500-419    
Pension Protection Act Zone Status   Red Red  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   62 57 59
Surcharge Imposed   No    
Multiemployer Plans, Pension | Western Conference of Teamsters Pension Plan
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   91-6145047-001    
Pension Protection Act Zone Status   Green Green  
FIP/RP Status Pending/ Implemented   No    
UPS Contribution   520 476 449
Surcharge Imposed   No    
Multiemployer Plans, Pension | Western Pennsylvania Teamsters and Employers Pension Fund
       
Multiemployer Plans [Line Items]        
EIN / Pension Plan Number   25-6029946-001    
Pension Protection Act Zone Status   Red Red  
FIP/RP Status Pending/ Implemented   Implemented    
UPS Contribution   24 21 20
Surcharge Imposed   No    
Multiemployer Plans, Pension | All Other Multiemployer Pension Plans
       
Multiemployer Plans [Line Items]        
UPS Contribution   $ 59 $ 44 $ 51
Multiemployer Plans, Pension | Minimum
       
Multiemployer Plans [Line Items]        
Multiemployer pension plans, percentage of plan funded   5.00% 5.00% 5.00%
Multiemployer Plans, Pension | Green Zone, At Least 80% Funded [Member] | Minimum
       
Multiemployer Plans [Line Items]        
Multiemployer pension plans, percentage of plan funded   80.00%    
Multiemployer Plans, Pension | Red Zone, Less than 65% Funded [Member] | Maximum
       
Multiemployer Plans [Line Items]        
Multiemployer pension plans, percentage of plan funded   65.00%    
Multiemployer Plans, Pension | Otange Zone, Less than 80% and Have an Accumulated Funding Deficiency or Expect to Have a Deficiency Within Six Years [Member]
       
Multiemployer Plans [Line Items]        
Multiemployer pension plans, percentage of plan funded   80.00%    
Multiemployer Plans, Pension | Yellow Zone, Less than 80% Funded [Member] | Maximum
       
Multiemployer Plans [Line Items]        
Multiemployer pension plans, percentage of plan funded   80.00%    
Represented by Teamsters [Member]
       
Multiemployer Plans [Line Items]        
Number of employees 10,200