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MARKETABLE SECURITIES AND NON-CURRENT INVESTMENTS (Tables)
12 Months Ended
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
Summary of Marketable Securities
The following is a summary of marketable securities classified as trading and available-for-sale as of December 31, 2024 and 2023 (in millions):
CostUnrealized
Gains
Unrealized
Losses
Estimated
Fair Value
2024
Current trading marketable securities:
Equity securities$$— $— $
Total trading marketable securities— — 
Current available-for-sale marketable securities:
U.S. government and agency debt securities165 — (1)164 
Mortgage and asset-backed debt securities— — — — 
Corporate debt securities39 — — 39 
Non-U.S. government debt securities— — — — 
Total available-for-sale marketable securities204 — (1)203 
Total current marketable securities$207 $— $(1)$206 
CostUnrealized
Gains
Unrealized
Losses
Estimated
Fair Value
2023
Current trading marketable securities:
Equity securities$$— $— $
Total trading marketable securities— — 
Current available-for-sale marketable securities:
U.S. government and agency debt securities963 (4)961 
Mortgage and asset-backed debt securities— — 
Corporate debt securities1,891 (4)1,891 
Non-U.S. government debt securities— — 
Total available-for-sale marketable securities2,864 (8)2,862 
Total current marketable securities$2,868 $$(8)$2,866 
Schedule of Unrealized Loss on Marketable Securities
The following table presents the age of gross unrealized losses and fair value by investment category for all securities in a loss position as of December 31, 2024 (in millions):
Less Than 12 Months12 Months or MoreTotal
Fair Value
Unrealized Losses
Fair Value
Unrealized Losses
Fair Value
Unrealized Losses
U.S. government and agency debt securities$— $— $162 $(1)$162 $(1)
Total marketable securities$— $— $162 $(1)$162 $(1)
Amortized Cost and Estimated Fair Value of Marketable Securities by Contractual Maturity
The amortized cost and estimated fair value of marketable securities as of December 31, 2024 by contractual maturity are shown below (in millions). Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations with or without prepayment penalties. 
CostEstimated
Fair Value
Due in one year or less$161 $161 
Due after one year through three years43 42 
Due after three years through five years— — 
Due after five years— — 
204 203 
Equity securities
$207 $206 
Investments Measured at Fair Value on a Recurring Basis
The following table presents information about our investments measured at fair value on a recurring basis as of December 31, 2024 and 2023, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value (in millions):
Quoted Prices in
Active Markets
for Identical
Assets
(Level 1)
Significant Other Observable
Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Total
2024
Marketable Securities:
U.S. government and agency debt securities$164 $— $— $164 
Mortgage and asset-backed debt securities— — — — 
Corporate debt securities25 14 — 39 
U.S. state and local municipal debt securities— — — — 
Equity securities— — 
Non-U.S. government debt securities— — — — 
Total marketable securities189 17 — 206 
Other non-current investments(1)
— 19 — 19 
Total$189 $36 $— $225 
(1)Represents a variable life insurance policy funding benefits for the UPS Excess Coordinating Benefit Plan.
 Quoted Prices in
Active Markets 
for Identical
Assets
(Level 1)
Significant Other
Observable Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Total
2023
Marketable Securities:
U.S. government and agency debt securities$961 $— $— $961 
Mortgage and asset-backed debt securities— — 
Corporate debt securities— 1,891 — 1,891 
U.S. state and local municipal debt securities— — — — 
Equity securities— — 
Non-U.S. government debt securities— — 
Total marketable securities961 1,905 — 2,866 
Other non-current investments(1)
— 19 — 19 
Total$961 $1,924 $— $2,885 
(1)Represents a variable life insurance policy funding benefits for the UPS Excess Coordinating Benefit Plan.