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MULTIEMPLOYER EMPLOYEE BENEFIT PLANS - Multi-Employer Health and Welfare Plans (Detail) - Health and Welfare Fund - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | $ 4,810 | $ 4,268 | $ 3,972
Delta Health Systems—East Bay Drayage Drivers |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 37 | 40 | 37
Central Pennsylvania Teamsters Health & Pension Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 31 | 29 | 27
Central States, South East & South West Areas Health and Welfare Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 2,899 | 2,530 | 2,366
Teamsters Western Region & Local One Seventy Seven Health Care Plan [Member] |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 769 | 656 | 605
Delta Health Systems—East Bay Drayage Drivers |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 30 | 30 | 29
Joint Council 83 Health & Welfare Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 45 | 40 | 37
Milwaukee Drivers Pension Trust Fund—Milwaukee Drivers Health and Welfare Trust Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 101 | 90 | 84
Milwaukee Drivers Pension Trust Fund—Milwaukee Drivers Health and Welfare Trust Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 48 | 43 | 38
New York State Teamsters Health & Hospital Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 71 | 62 | 59
Northern New England Benefit Trust |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 157 | 153 | 132
Oregon / Teamster Employers Trust |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 59 | 54 | 50
Oregon / Teamster Employers Trust |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 51 | 43 | 38
Teamsters 170 Health & Welfare Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 19 | 18 | 17
Teamsters Benefit Trust |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 47 | 48 | 46
Teamsters Local 251 Health & Insurance Plan |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 18 | 17 | 15
Teamsters Local 639—Employers Health & Pension Trust Funds |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 53 | 48 | 43
Teamsters Local 671 Health Services & Insurance Plan |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 32 | 29 | 27
Teamsters Union 25 Health Services & Insurance Plan |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 20 | 19 | 17
Teamsters Union 25 Health Services & Insurance Plan |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 59 | 56 | 52
Truck Drivers and Helpers Local 355 Baltimore Area Health & Welfare Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 19 | 18 | 16
Utah-Idaho Teamsters Security Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 37 | 32 | 29
Washington Teamsters Welfare Trust |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | 67 | 57 | 52
All Other Multiemployer Health and Welfare Plans |  |  |
Multiemployer Plans [Line Items] |  |  |
UPS Contributions | $ 141 | $ 156 | $ 156

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