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Marketable Securities
 12 Months Ended
Dec. 31, 2022
Debt Securities, Available-for-Sale [Abstract]  
Marketable Securities Marketable Securities
The Company invests in asset-backed securities, certificates of deposit/time deposits, commercial paper, and other securities. The following is a summary of amounts recorded on the Consolidated Balance Sheet for marketable securities (current and non-current).
(Millions)20222021
Commercial paper $213 $109 
Certificates of deposit/time deposits 21 14 
U.S. treasury securities — 75 
U.S. municipal securities4 3 
Current marketable securities238 201 
U.S. municipal securities 23 27 
Non-current marketable securities23 27 
Total marketable securities$261 $228 
At December 31, 2022 and 2021, gross unrealized, gross realized, and net realized gains and/or losses (pre-tax) were not material.
The balances at December 31, 2022 for marketable securities by contractual maturity are shown below. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.
(Millions) 2022
Due in one year or less $238 
Due after one year through five years 15 
Due after five years through ten years 8 
Total marketable securities $261