Annual report of employee stock purchase, savings and similar plans

FAIR VALUE MEASUREMENTS (Details)

v3.26.1
FAIR VALUE MEASUREMENTS (Details) - EBP 004 - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value $ 14,795,147 $ 13,327,277
UPS stock fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 1,098,000 1,450,000
Totals, Level 1, 2, and 3    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 14,795,147 13,327,277
Totals, Level 1, 2, and 3 | Self-managed accounts - Common Stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 816,248 683,669
Totals, Level 1, 2, and 3 | Self-managed accounts - Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 66,504 57,655
Totals, Level 1, 2, and 3 | Self-managed accounts - Interest-bearing deposits    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 100,170 90,094
Totals, Level 1, 2, and 3 | Self-managed accounts - U.S. government securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 5,225 7,226
Totals, Level 1, 2, and 3 | Self-managed accounts - Corporate debt securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 13,747 16,823
Totals, Level 1, 2, and 3 | Interest-bearing cash    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 36,111 23,229
Totals, Level 1, 2, and 3 | Common and collective trusts - Equity funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 7,580,787 6,630,548
Totals, Level 1, 2, and 3 | Common and collective trusts - Fixed-income funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 1,246,667 1,120,109
Totals, Level 1, 2, and 3 | Common and collective trusts - Lifestyle funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 3,432,403 2,837,792
Totals, Level 1, 2, and 3 | Common and collective trusts - Multi-asset funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 77,761 73,093
Totals, Level 1, 2, and 3 | Common and collective trusts - U.S. government securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 321,912 337,093
Totals, Level 1, 2, and 3 | UPS stock fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 1,097,612 1,449,946
Quoted Prices in Active Markets for Identical Assets (Level 1)    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 2,121,870 2,311,819
Quoted Prices in Active Markets for Identical Assets (Level 1) | Self-managed accounts - Common Stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 816,248 683,669
Quoted Prices in Active Markets for Identical Assets (Level 1) | Self-managed accounts - Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 66,504 57,655
Quoted Prices in Active Markets for Identical Assets (Level 1) | Self-managed accounts - Interest-bearing deposits    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 100,170 90,094
Quoted Prices in Active Markets for Identical Assets (Level 1) | Self-managed accounts - U.S. government securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 5,225 7,226
Quoted Prices in Active Markets for Identical Assets (Level 1) | Self-managed accounts - Corporate debt securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest-bearing cash    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 36,111 23,229
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common and collective trusts - Equity funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common and collective trusts - Fixed-income funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common and collective trusts - Lifestyle funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common and collective trusts - Multi-asset funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Common and collective trusts - U.S. government securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | UPS stock fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 1,097,612 1,449,946
Significant Other Observable Inputs (Level 2)    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 12,673,277 11,015,458
Significant Other Observable Inputs (Level 2) | Self-managed accounts - Common Stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Other Observable Inputs (Level 2) | Self-managed accounts - Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Other Observable Inputs (Level 2) | Self-managed accounts - Interest-bearing deposits    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Other Observable Inputs (Level 2) | Self-managed accounts - U.S. government securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Other Observable Inputs (Level 2) | Self-managed accounts - Corporate debt securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 13,747 16,823
Significant Other Observable Inputs (Level 2) | Interest-bearing cash    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Other Observable Inputs (Level 2) | Common and collective trusts - Equity funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 7,580,787 6,630,548
Significant Other Observable Inputs (Level 2) | Common and collective trusts - Fixed-income funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 1,246,667 1,120,109
Significant Other Observable Inputs (Level 2) | Common and collective trusts - Lifestyle funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 3,432,403 2,837,792
Significant Other Observable Inputs (Level 2) | Common and collective trusts - Multi-asset funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 77,761 73,093
Significant Other Observable Inputs (Level 2) | Common and collective trusts - U.S. government securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 321,912 337,093
Significant Other Observable Inputs (Level 2) | UPS stock fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0
Significant Unobservable Inputs (Level 3)    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | Self-managed accounts - Common Stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | Self-managed accounts - Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | Self-managed accounts - Interest-bearing deposits    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | Self-managed accounts - U.S. government securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | Self-managed accounts - Corporate debt securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | Interest-bearing cash    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | Common and collective trusts - Equity funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | Common and collective trusts - Fixed-income funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | Common and collective trusts - Lifestyle funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | Common and collective trusts - Multi-asset funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | Common and collective trusts - U.S. government securities    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value 0 0
Significant Unobservable Inputs (Level 3) | UPS stock fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments at fair value $ 0 $ 0