Annual report pursuant to Section 13 and 15(d)

MULTIEMPLOYER EMPLOYEE BENEFIT PLANS - Multi-Employer Health and Welfare Plans (Detail)

v3.6.0.2
MULTIEMPLOYER EMPLOYEE BENEFIT PLANS - Multi-Employer Health and Welfare Plans (Detail) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2016
Jun. 30, 2016
Dec. 31, 2015
Jun. 30, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Multiemployer Plans [Line Items]              
DefinedBenefitPlanRecognizedNetGainLossDuetoSettlementsandCurtailmentsAfterTax   $ 665          
Settlement payments to fund for assumption of postretirement benefit obligation $ 2,271       $ 2,271    
CashTaxBenefitDueToSettlementofBenefitObligation         854    
Change In Post-Retirement Benefit and AOCI 13       13    
Health and Welfare Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         3,761 $ 3,486 $ 2,352
Health and Welfare Fund | Bay Area Delivery Drivers              
Multiemployer Plans [Line Items]              
UPS Contributions         35 34 32
Health and Welfare Fund | Central Pennsylvania Teamsters Health & Pension Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         25 23 21
Health and Welfare Fund | Central States, South East & South West Areas Health and Welfare Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         2,268 2,081 1,306
Health and Welfare Fund | Teamsters Western Region & Local One Seventy Seven Health Care Plan [Member]              
Multiemployer Plans [Line Items]              
UPS Contributions         571 515 239
Health and Welfare Fund | Health & Welfare Insurance Fund Teamsters Local Six Fifty Three [Member]              
Multiemployer Plans [Line Items]              
UPS Contributions         6 6 5
Health and Welfare Fund | Delta Health Systems—East Bay Drayage Drivers              
Multiemployer Plans [Line Items]              
UPS Contributions         27 27 24
Health and Welfare Fund | Employer—Teamster Local Nos. 175 & 505              
Multiemployer Plans [Line Items]              
UPS Contributions         11 10 9
Health and Welfare Fund | Joint Council 83 Health & Welfare Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         33 28 26
Health and Welfare Fund | Local 191 Teamsters Health Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         12 11 11
Health and Welfare Fund | Local 401 Teamsters Health & Welfare Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         8 7 7
Health and Welfare Fund | Local 804 Welfare Trust Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         79 75 70
Health and Welfare Fund | Milwaukee Drivers Pension Trust Fund—Milwaukee Drivers Health and Welfare Trust Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         36 34 32
Health and Welfare Fund | Montana Teamster Employers Trust              
Multiemployer Plans [Line Items]              
UPS Contributions         8 7 7
Health and Welfare Fund | New York State Teamsters Health & Hospital Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         56 53 51
Health and Welfare Fund | North Coast Benefit Trust              
Multiemployer Plans [Line Items]              
UPS Contributions         8 8 9
Health and Welfare Fund | Northern California General Teamsters (DELTA)              
Multiemployer Plans [Line Items]              
UPS Contributions         116 108 96
Health and Welfare Fund | Northern New England Benefit Trust              
Multiemployer Plans [Line Items]              
UPS Contributions         47 42 39
Health and Welfare Fund | Oregon / Teamster Employers Trust              
Multiemployer Plans [Line Items]              
UPS Contributions         34 31 29
Health and Welfare Fund | Teamsters 170 Health & Welfare Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         16 15 15
Health and Welfare Fund | Teamsters Benefit Trust              
Multiemployer Plans [Line Items]              
UPS Contributions         43 36 40
Health and Welfare Fund | Teamsters Local 251 Health & Insurance Plan              
Multiemployer Plans [Line Items]              
UPS Contributions         14 13 12
Health and Welfare Fund | Teamsters Local 404 Health & Insurance Plan              
Multiemployer Plans [Line Items]              
UPS Contributions         7 7 7
Health and Welfare Fund | Teamsters Local 638 Health Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         40 39 35
Health and Welfare Fund | Teamsters Local 639—Employers Health & Pension Trust Funds              
Multiemployer Plans [Line Items]              
UPS Contributions         27 26 26
Health and Welfare Fund | Teamsters Local 671 Health Services & Insurance Plan              
Multiemployer Plans [Line Items]              
UPS Contributions         17 15 14
Health and Welfare Fund | Teamsters Union 25 Health Services & Insurance Plan              
Multiemployer Plans [Line Items]              
UPS Contributions         50 46 44
Health and Welfare Fund | Teamsters Union Local 677 Health Services & Insurance Plan              
Multiemployer Plans [Line Items]              
UPS Contributions         10 10 9
Health and Welfare Fund | Truck Drivers and Helpers Local 355 Baltimore Area Health & Welfare Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         16 15 15
Health and Welfare Fund | Utah-Idaho Teamsters Security Fund              
Multiemployer Plans [Line Items]              
UPS Contributions         26 25 22
Health and Welfare Fund | Washington Teamsters Welfare Trust              
Multiemployer Plans [Line Items]              
UPS Contributions         47 44 36
Health and Welfare Fund | All Other Multiemployer Health and Welfare Plans              
Multiemployer Plans [Line Items]              
UPS Contributions         $ 68 $ 95 $ 64
National Master Agreement (NMA) [Domain]              
Multiemployer Plans [Line Items]              
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments   1,066   $ 1,066      
Non-National Master Agreement (Non-NMA) [Domain]              
Multiemployer Plans [Line Items]              
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments 36   $ 36        
DefinedBenefitPlanRecognizedNetGainLossDuetoSettlementsandCurtailmentsAfterTax $ 22            
remeasurement of postretirement obligation [Member]              
Multiemployer Plans [Line Items]              
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments   746          
partial plan curtailment [Member]              
Multiemployer Plans [Line Items]              
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments   112          
defined benefit plan settlement losses [Member] | National Master Agreement (NMA) [Domain]              
Multiemployer Plans [Line Items]              
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments   $ 208