The Company invests in 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)	2023		2022

Commercial paper	$	—	$	213
Certificates of deposit/time deposits	49		21

U.S. municipal securities	4		4
Current marketable securities	53		238

U.S. municipal securities	20		23
Non-current marketable securities	20		23

Total marketable securities	$	73	$	261

At December 31, 2023 and December 31, 2022, gross unrealized, gross realized, and net realized gains and/or losses (pre-tax) were not material.

The balances at December 31, 2023 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)
Due in one year or less	$	53
Due after one year through five years	11
Due after five years through ten years	9
Total marketable securities	$	73