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)	September 30, 2023		December 31, 2022

Commercial paper	$	—	$	213
Certificates of deposit/time deposits	69		21

U.S. municipal securities	4		4
Current marketable securities	73		238

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

Total marketable securities	$	96	$	261

At September 30, 2023 and December 31, 2022, gross unrealized, gross realized, and net realized gains and/or losses (pre-tax) were not material.

The balances at September 30, 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)	September 30, 2023
Due in one year or less	$	73
Due after one year through five years	15
Due after five years through ten years	8
Total marketable securities	$	96